Someone is nice enough to open their house, provide food and drinks and make their collection available for a tournament and you treat them like that? Sure you say it was wrong to put a drink on the glass but who does that in the first place? What if it was a $300 piece of Invisaglass? When I am in someone's home, I treat their games with the ultimate respect. Nudging a game is surely acceptable, even if you tilt trying to save the ball. Intentionally tilting, hitting or kicking the game no matter how hard is simply not acceptable. To me the combination of the drink and one hit or kick would have send you out the door never to return.

This is most likely a troll thread and the OP has surely never run a tournament at his house.