People are not being banned for being pro-Rudy. Fierce Allegiance wasn’t pro-rudy.
People are being banned for things they say. Many for being hateful to Jim, or using foul language about other freepers who support conservatives. Some for lying about conservatives, or posting repeated articles attacking conservatives from liberal media and blogs.
Rudy supporters who haven’t gone out of their way to antagonize the conservatives for which this site exists are still here (except those who said they were going away on their own free will).
The speculation (and it’s speculation) is that stuned beeber was a retread previously-banned poster.
My speculation is that he was just a jerk noob who was a little too gleeful about the bloodletting of long-time Freepers.