I'm sorry to read the turn of events over the past couple of days. Your h may or may not move out, it all depends upon the wave of pressure he feels. Be ready for him to be as high as a kite one minute and as angry as anything the next.
I read where your h says he has no childhood issues. Please don't bring up anything regarding that topic because he will deny any problems and he doesn't really know what his issues are because they are just now bubbling to the surface and when he faces those issues and resolves them comes way further down the line. Also, even though you believe he's been in replay about a year, you can't put a timeline on replay. It could last a year or it could last 3, depending upon how and when he begins to resolve his issues.
I recommend you check out some of the books on men and depression listed on the recommended reading material thread on mlc. On the first page or 2 there are titles for 3 of the best books. If you can't read all the books, try to read these. Many of your questions will be answered there. Most importantly, try not to ask him about his decision to stay or go, let it be decided by him on his own.