Interesting to hear you comment on his 'unravelling'. It's hard when it's just you and him...I sometimes doubt my 'instincts' about his behaviour so it helps to hear other opinions (even if they are filtered through my lens!)
He seems to be focused exclusively around 'control' - or maybe just doing things in ways that serve him alone. Still frustrating, but I'm coming to expect it of him now - the only expectation I can afford to have these days.