as i remember there is a topic in the administration section called "Admin - helpdesk" where admins can reply if they have issues with there adminrights in servers.
well it might be a great idea to make a topic named "Admin - Incorrect bans" and that all admins have to put their mistaken bans in there, this way we as forum members wont see it and also less topics in the unban section lol

just some random idea, it will be better organized on forum also all those small topics and most people also just spam reply on them also..
if in need of a form to fill in like the helpdesk:
Playername:
Time and date:
SteamID and IP (amx_last):
Comments: (add here what happend and why you banned this player wrong)
and then the highstaff can edit the post and add this:
Unbanned on (Date and Time including timezone)
Unbanned on 14-06-2012 17:34 GMT+1 small suggestion ^^ and also the public wont see the admin mistakes
