Hi Aecman, I read your initial post and then read through the rest of this thread, and you've been given some great suggestions and advice regarding things to try in-order to better bond with your Amazon, and to settle his nerves and to help him feel more comfortable in his new home...You haven't responded back yet since your initial post, so I was just wondering how things are going with him?
I think the main thing that you need to realize and keep in the front of your mind right now is that it's only been about 2 months or so since you adopted your Amazon, and 2 months is not nearly long enough time for him to even settle-in to his new home, let along to get-over whatever past-trauma he has experienced. Amazons have the intelligence of a 4 year old human toddler, and as such, they have very good memories, as well as being very sensitive and emotional.
You're hitting the time period where you've had your new bird in your home for a couple of months, and you're starting to get frustrated with his behavior and his continued reluctance to be friendly and bond with you, so you're starting to get that very anxious, desperate kind of feeling, which is completely normal for a person in your situation. However, again, you just need to keep telling yourself that "2 months is not even near enough time for any huge changes to happen regarding his behavior"...Since you have to go at HIS pace, not your pace, any little, tiny positive improvements are to be celebrated and well-praised and rewarded...by you. So any time that he shows even the slightest gesture of kindness with you/towards you, any time he even just sits near you or even in the same room with you and your wife at the same time and he doesn't try to attack you needs to be greatly rewarded by you.
Also, try to keep in mind that you really don't know exactly what he's been through at any of his prior homes...In fact, you honestly don't really know how many different homes or people he's had in his life, because unfortunately when people re-home parrots, especially the larger parrots like Amazons, Macaws, Greys, Cockatoos, etc., they do tend to hold-back details and actually lie about how many homes they've had, what their behavior is really like, how much time they usually spend with the bird, etc. So what you need to remember is that this guy has absolutely no reason at all to trust you or your wife, as you're "just another home, and just another set of people that aren't going to be around for long"...That's sadly the way that birds like this tend to start thinking, and the more and more difficult it becomes for anyone to earn their trust. And earning their trust is always step #1. After you earn his trust, then you can better work on specific behaviors and training.
Right now he's decided that your wife is his person, and if what you said about his history with men is true, then he chose your wife simply because she's a woman, not for any other reason. If the man in his prior home did in-fact physically abuse him, then this is going to take a lot of time for him to get over...But it's going to be up to you to make a concerted effort to prove to him that not only are you not going to hurt him, but that you care for him and you want to be his friend. And the best way to do this is to gently and softly talk to him as much as you possibly can, whether he's sitting inside his cage and you're sitting beside it, or he's out of his cage and sitting with/on your wife, you need to try to constantly talk to him as nicely and gently as you possibly can, and try to make it you who gives him his treats, his food and water, etc. That will show him that you are providing for him and trying to help him rather than hurt him or neglect him. And since you have a man's voice, which he is probably very used to hearing yelling and screaming from, you need to always be sure to speak gently and very softly to him, as a loud man's voice may send him into either a rage/attack mode, or it may just scare him to death...
As far as him attacking you while your wife is in the same room, well, he's protecting her from you, as he see's you as a threat to his person right now. So it's not unusual for them to do this, especially if you go to touch your wife while in his presence...
***I'm going to take some flack for saying this to you, as it's a very controversial topic here in this community, but since it's now become not only a training/behavioral issue but also a safety issue with him flying at you/your face/head and literally attacking you, you may want to think about having his wings clipped (only by a professional who knows what they are doing, like a Certified Avian Vet, who by the way if you haven't taken him to for a "Wellness Exam" since you brought him home, you should do ASAP anyway)...Now a lot of people don't believe in clipping a bird's wings, some people actually get very upset at even the mention of doing it. However, only you know what your bird is like, what your home situation with your bird is like, and how much of a threat to your safety he is while he can fly. A lot of people, including myself, have found time and time again that if you have a bird who is having either behavioral issues, such as in your situation, or if they have adopted or purchased a bird that is not tame and cannot be handled or interacted with at all, sometimes clipping their wings temporarily is a very safe, efficient, and successful way to solve the issues very quickly.
If you have your bird's wings clipped, or you are considering it, you need to remember that it's completely and totally safe for your bird, it is painless, and most-importantly it's completely temporary. You should always tell the person who you have clip your bird's wings that you only want the outermost 3-4 Primary Flight-Feathers on each wing clipped only, no more! This way your bird will not be able to fly at you or attack you, but he will be able to safely glide to the floor and not drop like a stone. And this will also mean that they will grow-back fairly quickly, usually if only the outermost 3-4 Primaries are clipped, they regain the ability to fly in about 2 months at a maximum. However, it's extremely important that during the short amount of time that you have while your bird can't fly, that you take full-advantage and that you commit fully to working with him on a daily basis.
In your case, it would probably be best to try to work with your bird one-on-one, in a room alone (without your wife for sure), with the door shut, and that has carpeting so that you can work with him on the floor, or while he's sitting on a T-Stand. Your wife cannot be around while you're working with him, as she will be nothing but a total distraction to him, and your goal by working with him every single day is for you to earn his trust fully. With your wife in the room with the 2 of you, he's going to automatically think of you as a threat to her right from the start, and that will make it impossible for your training to even get started...And if you do clip his wings prior to starting this daily one-on-one training with him, it will make it much, much easier and much more fulfilling, as you won't be constantly chasing him around the room as he's flying away from you, nor will he be trying to attack you...Also, with their wings clipped they tend to have to rely upon you for more than they do if they can fly, so it presents a great situation for you to earn his trust, and for him to start to trust you, as you're the one who is helping him every day...And if you take full-advantage of the short month or two that you have before he can fly again and you fully commit to working with him alone every single day, one-on-one during this time period, the idea is that by the time he is again able to fly, it will no longer be a safety issue, and then you can start working with him while he's flighted, for example you can then much more easily and efficiently start Target-Training him, as he won't be constantly flying away from you or trying to attack/hurt you.
Again, there will be a lot of people that are going to disagree with me full-force about clipping his wings, and that's okay, it's a totally and completely personal choice between a bird and it's owner, and it's not anyone else's business, as they don't know the situation you're in with your bird...It's my opinion that when it gets to the point where you are actually being attacked/dive-bombed by your bird, especially a larger bird that is going for your face or head, then it has become a safety issue and this is when it become a necessary thing to at least try, as you're not only in-danger of being seriously injured (eyes), but it's nearly impossible to try to work with a bird on a daily basis when he just wants to attack you...And remember, it's completely painless and very temporary...And in my personal training experiences, especially with non-tame birds that become aggressive when you attempt to handle them or even come near them, clipping their outermost 3-4 Primaries on each wing has worked wonders almost every single time I have done it.
This is just meant to be something for you to think about and do your own research about, and then make your own decision about, based on what is best for you, your wife, and your bird. I simply feel that you should be presented with all the options and information from both sides of this discussion, from the point-of-view of someone who has had much success with this training technique...