Usually when there is some loon spouting off nonsense, it is seen for what it is. I don't think you have anything to worry about.

Sounds like the same ahole that made some bs cl ads up about me a while back .....

Not sure what to make of that situation.
Thinking back over the events of the show weekend, do you recall talking to any certain guy that may have taken part of your conversation out of context and made it into something that it wasn't?
Are you thinking you met this guy and talked to him, but you don't really know him, -or-
that you did not meet him, but perhaps he overheard part of some conversation you were having with someone else and he didn't grasp enough of that conversation to accurately know what you were talking about?

Just gotta move on I guess, and try to have a good/positive rest of the year.

Not that it had to be anyone who actually attended the show, but if it was then the only person I encountered who violated the No Bullying policy was the over-eager janitor woman who couldn't wait to clean the public restrooms. Maybe she's out to get you for an untidy bowl and has a preternatural knowledge of pinball and Pinside politics.