I read a lot of it when it was happening. I saw people say they were going elsewhere, and I saw people get banned when they became abusive, but I don't recall anybody that "got the heave-ho for disagreeing".
I'd be interested in seeing somebody come up with a couple of names to prove me wrong though. All I see is people that continue to make the claim that it happened.
You would think, if there were dozens of posters that supposedly got zapped merely for disagreeing, they could come up with one or two names, eh?