If my W came back to me for financial reasons, because she didn't want to sell the house, "just for the kids", etc... I think I would take that opportunity, at least initally.
I watched Fireproof and can tell you that many of the problems in that movie mirror ours. Just taking time to do the little things. The problem is, it is tough to do those things when she isn't here. I don't even talk to her everyday.
So, if I could get her to come back home and live with me, I could at least try to do some of those things.
Anyway, I think you are right. I certainly wouldn't be one to say "ok, whatever". I'd be genuinely happy, but would probably sit down and have a serious heart to heart. "Why do you want this?" "How do we make it better?" "How do we approach this from the perspective of counseling?"
Stuff like that.
I think I'd also want to bring up the changes I made and explain that I don't want to lose sight of those changes because I think they are good for me. Things like going to church, doing some GALing, etc...
Lots to think about, but like I said earlier, no new words taht we are not filing this week...but nothing saying we are either...other then our conversation 2 weeks ago.