you can't really strip the idle user in this situation. nonetheless, it's just a massive time sink.
Happened to me late last night, but on what I had planned to make my last win of the night (got to silver board). Once he went AFK, I padded my lead a bit, and then left it on myself and watched TV. Guy tried to be a douche, but HE ended up quitting after seeing that I cared less about playing 2K for the rest of the night than he did.