I agree with George H.. Since I wasn't there to see and hear the whole thing I am not sure whether I could give objective advice. We had a similar guy at Annap's gathering. I think he may have had a drink or two and forgot his manners. He crumpled a couple of beer cans while some songs were being performed during the round-robin session. Luckily, he was way in the back and was not a total disruption for everyone (I think). Fortunately, his wife, who was apparently sensitive to his behavior, spoke to him after the second crunching and all was well.

Perhaps a conversation with someone well acquainted with this guy's partner would be productive. You might at least get the benefit of some more insight as to why this guy is the way he is. I mean, if you learn that the guy is a chronic ass, then further conversation will likely be of no use. Or you might discover that he is totally puzzled about the whole thing and would like to work it out with you.