Were you gone for the month of April? That's when the purge mostly took place.
And if you really want to know why just go back in the archives for JimRob's posts and 'vanity' threads. He did most, or a good portion of the zotting himself.
Bottom line - FR is for conservatives and conservative causes. Not 'republicans' and/or 'pro abortion moderates' (rudy and his bots).
It's far more arbitrary than that. It's currently for ex-abortion lobbyist, first amendment choking, FRed Thompson. Why? Because he has a conservative sounding voice. (i.e., he speaks "southron," a kind of redneck ebonics).