As far as the specific sanctions, I would say just disable the accounts. It's probably as effective and a lot less work, since anyone can start a fresh account to get around any other sanction.
Also, a tip to anyone engaging in this kind of useless posting (if you want to get away with it): using "perl" as part of your name makes you look clueless. Perl is what this board is about. Adding the word to your name doesn't add any information.