This is such a tough topic. There's very little he can do -- aside from quitting his job.
I guess it depends on how important the marriage is to him, and to what extent he feels you're serious about your boundaries.
Quote:
He knows how I feel, and he says he understands and respects that.
I don't get the impression that he "respects" that one whit. I've read all of your past sitch, and I'm sorry to say, but I don't think he takes you seriously at all.
Again, go check out Pensacola's thread for a good discussion about "boundaries" vs. "ultimatums." Your position should have been "Look, I'm not telling you where to work or what to do. I'm telling you what MY boundary is, and I'm saying that I value myself too much to remain married to someone who's back in daily contact with the woman that he had an affair with." (or whatever)