For the record, a couple of people were ejected from the conference mentioned by "Anonymous" as a result of some combination of the behaviour described and other behaviour. Which, at the time and now, I think was the right decision on the part of the conference organisers. (Unfortunately it's not the only incident that I'm aware of at that conference that year. And I don't know if anything else happened in the other situation I'm aware of; it's not my story to tell, and I don't know the full detail.)
As someone else already said in the comments it's sad that it's still necessary to be having this discussion. But it's clearly still necessary, because it keeps happening. Thanks for writing about it.