No...My XH and I went through the big D and he never looked back. This was 6 months ago. I went to see him at work once and he said that I'll never know how much he loved me. Well, let's see...we got D, he does not communicate to me anymore...I guess the picture is real clear.
They do have second thoughts, but once the papers are filed - usually they proceed. To get M is easy, to get D is a lot harder and expensive.