Yeah, I was hoping Pop would get on Gchat but I haven't seen him all day. It's an old exploit that was patched a while ago, but I assume Pop did something to the server recently that undid it. Next time just ban them on sight instead of kicking, since they kept coming back.
Also, if you find it, please don't tell others like Ucan seemed to do. And don't hop on Ts3 asking for an unban, I wouldn't even if I could.