Yeah, I wouldn't hold my breath on that. W is a closet liberal and his second term is proof of that.
The BEST thing that W is doing is what ALL former presidents have traditionally done (Clinton being the exception, of course) is to keep a low profile and keep his own counsel. So far, that's one of the BEST things he's done since 2004.
President Ford, W and his father are the only former Presidents that I can think of in my personal recollection who went away and behaved himself with any personal dignity once out of office.