This guy claims to be admin for your site, he cheated through several games and ruined it for players. What example is he setting and why is he an admin, he's damaging your reputation and people won't come.

Assuming you mean GameTracker, i doubt that this individual has anything to do with GameTrcker.

Assuming it's a server administrator in-game, they also have nothing to do with GameTracker.

Either way, the bottom line is, in-game activity has nothing to do with Gametracker...