Probably would be a good idea to stop talking about them anyway. It just encourages the behavior we're complaining about. Getting several posts deleted hasn't stopped the unpleasant responses. Maybe ignoring them completely as if they didn't exist might. But I think when a poster responds with name-calling just because they don't like what they were told, I think the term troll can be applied.
I agree about the poofed posts leaving confusion in the thread. But at least now they are also deleting the posts that quoted or responded to the poofed posts, so that helps. Except now there's a "twilight zone" feel to the thread, like where you could swear you posted something there but it's gone now so you go hunting for the post in other threads because you're sure you said something but can't find it anymore.
Time to build a bigger bridge.