Quoted from gweempose:
Don't feel bad. Yancy has some high scores on a couple of my games as well. Try as I might, I was never able to take down his GC score on my GoT LE, so I did the only thing that I could do and sold the game. Now it's somebody else's problem!
I just dont invite him over then you dont have to worry about him GCing every machine you own.