OW in my situation ended things in August, and H pathetically stalked/pursued her til she gave back in in December. Gross. But it seems to be the norm when the OP ends it instead of the WAS.
I suppose you could look at it like this. Things are NOT working as is, living in the same house, him 'faulting' you for everything. Up until today, did you check on him?? No more of that. Why? You don't care where he is (or at least act like it, until it feels that way, and it will eventually). But anyway, things aren't working with you guys in the same house. He 'left' the marriage, so he should leave the house. No need to be very nasty about it, try a discussion about separating, telling him its not good to live together at this point, and see what he says. My H was always very rude saying "YOU leave then". He was past the anger stage by the time I told him I would legally get him out if he didn't move out.