Enzo is the same, if I let her, its part of being an intelligent and inquisitive minded bird I suppose. I work around it myself and Enzo continues to fly. If my kids annoyed me by walking in the mud all of the time I wouldn't cut their legs off, the only benefit of being a bird (prey!) is the ability to fly, I have never taken that away from any of my birds.
Personally I have areas that I allow Enzo to destroy and areas she cant, for example I have a ÂŁ3000 hand made wing back arm chair that I enjoy sitting in, Enzo knows not to chew or indeed go any where near it unless I actually call her when im sitting there. Other areas, one spot on top of one kitchen cupboard I look at as sacrificial as I can always repair...... Enzo can chew all she wants there.
Work with the issues, dont take your birds flight please.
While I totally understand why many people feel the way that you feel BigFella, and while I respect your opinion and feeling on what you do with your own bird in your own living situation, I hope that you can really think about this and take a step-back for a second, put yourself into the shoes of others, and realize that everyone has their own, individual situations and issues, and each bird-owner has to make their own decisions based on their own living-situations, and they must do what is right for both them and their bird...And more importantly, in this particular situation the bird's flight has presented a serious safety issue for both Billdore AND for his bird....
So while Billdore and the rest of us totally and completely respect your choice to not ever clip your bird's wings, you also need to respect everyone else's choice if they do choose to clip their bird's wings. The way that you made your statement, even though you didn't purposely mean what you said in this way, I know that, but it came-off to me as though you were saying that clipping your bird's wings, regardless of the reason, is a form of abuse. And because the decision to clip your bird's wings is an extremely difficult one for most people, as it obviously has been for Billdore since he stated right away that he "feels like a failure", making him feel guilty for the decision he made is not at all helpful. People make this decision for any number of very serious reasons, whether it be for the health and/or safety and welfare of their bird, or the same for themselves and their family members, and there is usually a very good reason when an obviously committed, loving, caring parrot owner chooses to clip their bird's wings.
So to be so judgmental of someone for making this very personal decision when you have no idea what this person has been going through or how serious an issue it actually is for them, and you're only basing your comments on your own situation with your own bird in your own home, the end result could be the person actually changing their mind and deciding to not clip their bird's wings...which is exactly the decision you want them to make, I understand that's your purpose, but then what do you say when a week later the bird dive-bomb's Billdore and he loses an eye because of it? Or his Timneh gets up to the curtain-rods, chews some of the paint off of it and eats it before Billdore can stop him, and then his Timneh dies from the paint he ate? These are the individual situations/issues that Billdore has been dealing with for quite a long time, and it's gone-on for quite a long time because Billdore has taken this decision very seriously and it was obviously a last-resort. But now he has made the decision that he feels is right for him and his bird. And it would be nice if you could understand that and also respect it, as we all, including Billdore, respect the fact that your bird's are all fully-flighted.
It's good that your bird does well being fully-flighted and that you're able to "work-around" his flight and any issues that arise because of it. Unfortunately this is not the case for quite a lot of parrot owners, for whatever the reasons. No two birds are alike, no two owners are alike, and no two homes/living situations are alike. That's what you need to try hard to understand, out of respect for all bird owners on this forum and everywhere else. And you also need to remember that clipping a bird's wings is a painless and very temporary decision to make. At most Billdore's Timneh will be grounded for a couple of months, after which he'll be fully-flighted again, just as before, and hopefully the couple of months that he is unable to fly will not only strengthen the bond between Billdore and his Timneh, but it will also result in his Timneh learning that the behaviors that he has been displaying while he was flighted are not acceptable, and that he has many other options/activities that he can do instead of the ones that he's been doing. The dive-bombing at people faces is the scariest behavior that flighted pet birds can exhibit, as it can result in not only serious injury to the people they are dive-bombing, but the immediate, automatic reactions of the people the bird is dive-bombing can be fatal to the bird too. So when everything else that you try doesn't work or even help, and you've exhausted all other avenues to the point where your relationship with your bird is being strained due to their behavior, you must do what you gotta do...And once again, it's completely and totally temporary, and short-term at that. It's completely painless, and as long as the bird's owner commits to taking full-advantage of the time while the bird is grounded and spends ample time working with the bird, bonding with the bird, etc., then it's all for the better.
Billdore, don't you dare feel like you failed, this happens to most bird owners at one point or another, especially the owners of larger parrots who can potentially pose a safety risk to both themselves and the people they live with. It's a necessary and usually very successful solution to your problem, and most importantly, remember and remind yourself often that it's short-term, painless, and for the good of you both...
On a side-note, I'd look into either buying or building some different stands/play-gyms, either out of PVC or wood/branches, that you can place in various rooms of your home, so that Timneh always has somewhere that he can call "his own", and always has something to do with his time and his beak. Keeping him busy and from becoming bored is crucial, and I've found myself that having an area/stand/play-gym in every room that the bird knows is all-his and no one else's can help tremendously...