No, of course he can't get her out. She has a perfect right to remain. If they divorce, whether or not he is the sole owner on the deeds or Land Registry, she still won't be thrown out though, in the event of divorce, the house might have to be sold immediately, in which case neither has the right to be there, obviously. She ought not to change the locks to exclude him. If she wants to exclude him she'll have to get a court order on the grounds that he is molesting her or some such ..