The woman can divorce him: whether he says he can't afford a divorce or to move out does not change the fact that she has a legal right to divorce him. In the divorce, based on what you write, she will almost certainly gain full custody and he will be ordered to move out (or they will sell the home if it is owned, split the proceeds, and both move elsewhere; or he will stay and she will move, with proceeds or support from him--in any event, they will be separated).