Translation: the guy spams loud music on the mic and spams the chat full. He has a namehack so it's impossible to ban him without using /ban @aim. That assumes that he is actually playing. When he is sitting in spectator I cannot ban him: when I tried, I first banned the player whose name he had stolen, and then when I typed the same thing it said nobody was on the server with that name, even though his name had not changed yet.
One of the bans I issued was an IP ban; he clearly has dynamic IP. He seems to have given up for now as he has not returned. Good riddance, he probably realised that he'd best go be a fat cunt elsewhere rather than on a server that has admins to stop him.
Anyways, the question here is: how so we stop those things efficiently? If he had stayed in spec I would have been powerless.