i would say do not unban him. If he wants to play on our server that bad he can get another key code.
I would disagree that "this kind" of player is worse than a lot of the ones we have on our server currently. We get campers and spawncampers on our server. This guy is obviously involved in the game to the point of being in clans. We want those people on our server rather than the people who have less respect for the people who play regularly.
No to unban, though. Damage is right. It is understood that recruiting on other clan servers is an offense. Most clans that intend to do so tell their members to make sure an admin isn't on. I have not seen a console message that includes this rule, though. Why dont we add this console message:
"Hacking, recruiting, advertising, and/or glitching will result in a permanent ban from this server."
advertising would be someone spamming their website url and stuff like that.