Not to bash or stereotype the gentlemen here who are going through the same h*ll that we are, but I don't know that my H would ever come home, simply because of his pride. But you are thinking it would be the same man that would return and that is where you would be mistaken. For a WAS to turn around, you can not fathom the process that gets them to that place. Pride can be annihilated with just one moment of true clarity about ones self and situation. Pray he has not one, but many.
He is never wrong. NEVER. And, if by the off chance he had a bad day and was wrong, he would never admit it. And I don't just mean during his MLC - he has been blessed with being right his entire life.
When I try and fast forward (I know I shouldn't be doing this) to the part where he comes out of this fog, I don't see him saying, I was wrong to leave you. And to him, coming home would be exactly like saying that. It would be admitting to himself and others that he was wrong. Your focus is in the wrong place. If you stay in THIS place, you won't be prepared for his return. Thus you've made your own self-fulfilling prophecy. Your pride is in thinking you know what he's going to do based on history.