I looked at some a few weeks ago to see if I could confirm or deny the assertion that he was some sort of hard-core Libertarian.  As best I could determine he was mostly focused on technical matters, at least in the text that is captured on the current forum.  The most interesting thing I found was a fairly strong desire to avoid Wikileaks, though it was stated as a concern for the health of the nascent crypto-currency solution rather than any particular political bent.

I didn't recognize a particular match with any current member, though my pattern matching skills in this area are probably sub-average.  I do feel it more than likely that the primary person behind the initial Bitcoin development would continue to have enough of an interest to remain at least occasionally involved.  Whether he would waste his time on this forum is less of a certainty.