Are you kidding? Of course it is. We have a guy who was booted out of a conference for completely opaque reasons, based on alleged complaints with absolutely no details by completely anonymous people. That doesn't bother you?

It does, but it sounds more like the organisers were just poorly equipped to deal with negative feedback. I don't think they wanted to do much more than avoid trouble. It was not handled well but I think that's about all there is to this one.