This reminds me too of the choice I had to make in my sitch. In mine, my H wanted to S but at the same time live a few days in the house. It was him who wanted it, saying that it would be good for D12. This would have resulted in a sitch similar to yours.
I immediately thought of it as cake eating - he would have the leeway to pursue OW while not feeling guilty about not meeting his paternal and family obligations. But what about myself? i would be in pain, seeing him, knowing he was pursuing OW.
I said no, would rather have a clean cut - divorce! Well, for now he has chosen to stay at home. Maybe he might rekindle EA in hiding, which of course no matter what happens I will ultimately find out and he would have to face the consequences, maybe he may later choose to leave ..... I don't know. But at least for now the situation is as I prefer it and is under my control.
Its is empowering to be able to think clearly, and so good that we have examples to follow from other people.
Me:49 H:45 D:12 M:14 T:18 Bomb: 6/26/10 EA: 9/3/10, fizzled out slowly, now ??? 11/5/11 Retrouvaille Finally piecing.... Its peaceful at last, but we got a looong way to go