If they weren't identical, then having them change their names weren't neccessary. If one started to break rules, hack, etc, you could've just done the proper punishment to the original or the phony...from what Double says there we slight alterations in their names, meaning it should've been no problem. It's a minigames server and you don't have to be so strict.
Though, Rabid, you shouldn't have taken it into your own hands as much as you did. Instead of yelling and being yourself, you should've gotten Serbian me Billy Pyro or any other admin to come in and handle it before the silence and kicks.
Nothing that harmfully bad. If I'm wrong on how the names were and all please correct me.