I couldn't bear taking Madison's eggs away from her (my B&G). Just felt like it wouldn't be right. She was doing such a good job taking care of them and was safe, healthy and eating/drinking well.
She was very protective of them but didn't get overly aggressive. She and I are VERY close though and she doesn't like any of my other birds. If she had a best friend birdy, things might have gone differently.
When I picked one egg up she came over, took it out of my hand, put it back under her and then did a half-arsed lunge just to let me know I wasn't to touch. She wasn't trying to hurt me and didn't actually even touch me, just wanted to get her message across.
Once she lost interest and I removed the eggs she returned immediately to her normal mama lovin' behavior. That was over two years ago when she turned 10 years old. She laid 3 eggs total, the first one broke and she replaced it so she was always sitting on 2 eggs. She hasn't laid any eggs since.
I honestly think if I had taken her eggs away, Madison would have laid more, since she replaced her broken egg so quickly. (she had been sitting on the original eggs for about 2 weeks when one broke)
First off, if it's becoming too dangerous for you to get to your downstairs area then maybe relocating them with the nest or removing it might be a good idea. Don't want you losing a limb.
Hopefully this isn't the case. If you can deal with it and feel comfortable with the birds where they are with their nest, they are eating/drinking good and seem healthy, I would just let them be.
Taking them away now or in a month is probably not going to make a difference in how they behave towards you. Like Tex said, I would try to discourage them from doing this again, at least in this area. Maybe giving them a large nesting box in their play area or on the cage would help. My Macaw plays in her nestbox all the time, she absolutely adores it. I worried it would encourage her to continue laying eggs but, nope, she thinks its her clubhouse

Definitely add calcium, protein & extra nutrients to the diet to compensate for the nutrients lost in egg production. I gave my Macaw a small amount of cottage cheese when I realized she was laying and for a short time afterwards.
I had an egg bound chicken that I had nearly die on me and my vet told me that cottage cheese helps the bird to absorb calcium better. Never had a soft egg/egg bound problem again. Of course do this in moderation, don't want to give a bird too much dairy.
Good luck and I would really love to see some pictures of this crazy nest too, if they don't chase off the paparazzi!