Al,
It sounds great what is happening. So scary at the same time.
H told me a couple of months ago that he wants to come home he just doesn't know when.
Due to pressure from inside and out I gave an ultimatum and learnt the hard way that I can't follow through with it. We did talk and he said he's not truly happy with OW but more importantly he's not unhappy with her. It wasn't what he expected. He said most importantly that he has no pressure there.
So no more ultimatums and no pressure.
He says he wants to come home and actions also dictate this to a degree BUT he needs to do this at his own pace.

You did the right thing by stopping the timeline. The timeline is pressure and is the one thing that can send them running because although they may feel it really really feel it, the timeline can cause panic.