I post, this late in the game, only because my perceptions are so different from most in this thread... Frankly, I don't see where anything this guy did was "wrong" (with one exception).
His Wiz ran, and he asked if he could play that out. The GM said "In a minute", and went on with the Beholder-battle. So the player sat there, and recorded damage, without the GM noticing... Great! He was interested in the game, and found something to do! I wish all players were that involved!
Then he saw the GM making what he thought was a mistake, and called him on it. No problem! He said why he thought Virel was wrong, Virel gave his side. No worries!
Then, instead of dropping it, figuring there was a heads/tails chance of who was wrong, he "pushed it", and continued even after the other players told him that it didn't matter what was on his sheet, it was the GM's sheet that mattered... That's the only thing that I have ANY problem with.
So the players exerted some peer pressure, and he apologized, to all involved, multiple times! Sheesh! Problem solved, it seems to me.
People aren't perfect, players and GMs included. Either one could have made the 4 HP/8 HP mistake. Either way, it's an accounting error, and not a personal attack! BOTH sides need to get over it, and move on...
Trust, and even respect, have to be earned. If the guy had never played with you before, then you shouldn't be expecting anymore than what's due to an average person. Let him play, and let him see just exactly how fair you are...
