I think he should stay banned for another week or so.
The counts are:
[.Fs-#2] Serhoe<ibis.a> 67
Serhoe<ibis.a> 1
After he is eventually unbanned if these numbers ever change, in other words if he does this again. He will be banned from all of IBIS perma. This is all of the servers and websites and this is everything from steam id to ip address.