I was thinking more along the lines of football hooligans killing off/kidnapping the members of a team
Ah, I think I know how this will work now.
It was the most impress party that the team had ever done before, and none of them though to the fact that they had another game to play today.
Now all they could remember was that someone had brought over 4 friends who where not Football people to the party, but everyone was so hung over that they could decided who they where.
If they sent one of them out, they would be the laughing stock of the league. So the best plan they could come up with was to send some people home by popular vote. There was no risk to sending a real teammate back, as they would sober up and return in time for the game, but the people who where left had to play, so they could not just send everyone home.
Remember this is drunk logic. Find the friends that are pretending to be fellow teammates, or face pubic disgrace when you take amateurs out to the real game. The seer will be the non-drunk teammate that decided to humor his friends by playing along.
Sure it needs some work, but what do you think of it?