After 10 PM is not cool. It shouldn't have started in the first place. When they got there at 9:30, it should have been called off. Lube, I think you ought to buy the next batch of beer and take it over to the neighbors house with an apology. No sense in letting a small deal like this interfere with however many years of good relations.
Listen to me talking, I would have probably gone ballistic no matter which side of the issue I was on.
Nevertheless, that's what people would tell me.