I see on the bans list there is a ban by Hbeta around that time of a guy with a similar name. Maybe he got to wrong one being in a hurry.
It is possible that a moderator typed in the banclient command with the incorrect CID and neglected to check to see who was kicked. The mod probably thinks he banned the hacker but actually got deadagain and doesn't even know.
-This is always a possibility for these situations, I think.