Threads on this:
Ron Paul ends campaigning, but stays in the race for GOP nomination
Theories on the Ron Paul Campaign
Scandal! RevPac Founder Reveals Juicy Behind The Scenes Details
While the second thread is more of a forum debate on the truth about Ron Paul, the first one is basically the play by play as it happened in real time, with all the appropriate links.
In particular, see the write up here, and the links to the details of each theory (which are provided in reverse chronological order) in the opening intro at that blog post.