Thanks everyone, he was coming up the stairs when I was leaving. He said he'd been out walking but not saying much else. He sat outside on a bench for a bit and eventually we went to get lunch. Unfortunately the cafe I chose was a bit noisy loud music and talking and he was sitting rocking a bit and covering his face. Not really speaking.
@Stressedagain21 You are providing one on one psychiatric nursing care to your husband for free. I have a severe mental health disability so it's not like I don't know about this stuff, but all this shouldn't be a regular/constant thing. Not the random behaviours, and definitely not the abusive and controlling ones. To me the rocking etc is a stereotype of a person with autism. Maybe I'm too much of a skeptic, but I would not take that entirely on face value when it's coming from him and in these circumstances. I would see it as part of his attempts to manipulate you.
He does have MH issues too along with the AS, depression and anxiety so that's why I was worried. I know things aren't good, unfortunately he is from overseas so if we split he would need to sort a flight back and its ridiculously expensive just now he's not been able to visit family during the pandemic.
He is manipulative and uses making you feel sorry for/worried about him as a way of trying to make sure you don't separate from him no matter how unpleasantly he treats you.
I would keep a log somewhere of the times he kicks off and other things he does that upset or worry you, including disappearing etc. This'll help you see what's going on and keep your eyes open to the reality of what's happening. Keep it somewhere private either online or IRL.
You could also use this thread for that too. Your wellbeing is as important as his- in fact it's more important, as you are you and your main responsibility in life is to take care of yourself and make as comfortable a life for yourself as you possibly can.
Feel free to tell us more about any other ways he's behaved/instances that you've found unpleasant. x