DQ for unsportsmanlike conduct - or for being a dick, take your pick. Feel free to arbitrate.
More to the point. That could only happen a few times before word got around. Good luck to that guy trying to get into future matches after he earns THAT reputation.
There haven't been many (less than 5), but local clubs have permanently uninvited shooters before.
You don't think Mr perfect double would do it? Someone is going to ban him??