User blog comment:KerryKoopa26/I have an idea…/@comment-4449548-20120923014521/@comment-4449548-20120923152143

http://help.wikia.com/wiki/Help:Blocking

"Administrators can block users and individual IP addresses (or IP ranges, see here). Blocked users or IP addresses will still be able to read the wiki, but will not be able to edit, upload files or add comments."

Nope, it's possible. The admins just don't come on here anymore so they can't see what he's doing.