I can tell you from my experience, that XW did this sort of thing as well - and it was almost entirely due to the fact that she felt bad for leaving, and didn't want to look like the bad guy.
This may not be your case, but when you are making a sincere effort on DBing and put into practice the tenets, many WAW experience a wide range of emotions a few of which include: anger because you didn't change earlier when they still cared, disbelief that the changes are real, and a growing realization that they are going to look like the bad guy. It makes for a very confusing time for them regardless how they act on the surface.
