So if you do not want a divorce my suggestion again is to take no action towards that goal. My guess is that he will also take no action towards it either. He needs your help to push him through to that goal. I would not give him that help.
Cas, I agree with Lance. Don't resist in obvious ways....just don't facilitate the process. I know that I would never be in some kind of "friendship" with XH if I had contested the D. We have no children and a pre-nup spelled things out for the most part so I didn't need to use a lawyer to protect my assets or children's futures.
My XH has a somewhat rigid personality --- he tends to be a bit OCD at times --- so once his mind was set on D there was no way to stop that train. Jody (DB coach) said that sometimes once the D occurs the WAS lowers their resistance and can begin to feel emotions again. I think this is what happened in my XH's case.
You can drag your feet in lots of little ways. The problem comes when the courts get involved and begin imposing deadlines. That is the point at which I felt as though I was being carried forward by floodwaters.............Drag your feet now in subtle ways. It sounds as though your XH is beginning to wake up.