Well, if this post doesn't shame that person, I guess I don't know what shame is... And since I know the name now, but it's not naming, I guess I don't know what that means either!
Probably this guy thinks "I'm not cheating" going by the same logic you are...
The minute you see a cheater, leave the session. Staying will only make the cheater want to stay. On my JEDI server, the minute a cheater joins, everybody leaves. After about a minute's wait, that cheater leaves and we all come back. You can use the "INFO" tab on the Server Browser to tell you which users are currently active on a server.