I have been following your story. There is DEFINATELY something wrong in HIS mind, as this behaviour is not normal. Some screaming occasionally, yes, but mostly no. If it is as bad as you say, then I can Imagine that he is stressing himself out so much, that is unhealthy for him.
I have a grey that goes frantic with panic when I try to mist her, she screams, flips out, climbing around her cage, thrashing her body around against the bars, falling until she almost passes out from exhaustion. The area around her eyes turns bright red like she's going to bleed at any moment during this event. I have tried every way possible with bathing her, and this is the result of it, so I chose to go against all the advice and warnings from all members here and let her bath in her water dish on her tree stand when she wishes. In my mind her emotional well being is FAR better and more important than her dusty little body.
That being said, I would try to find out WHAT exactly sets her off, is it your husband? If so, can she be put seperate from him where she can't see him? Le time know and I will offer more advice as you can describe when she is quiet and happy, and when she throws these fits. It has to stop, it's very unhealthy for her well being and YOURS!