I am taking care of myself and having lots of fun with friends!
Also sooooo important!!! Your H, even though he seemed to have ended the A, still betrayed you. You are entitled to your feelings of hurt. But unfortunately, this is not the time to show your feelings. He knows your feelings. He is afraid of them. There will be time in the future to work through those together.
I would support him leaving his job. If he is trying to make changes, that is good.