Banning someone because you have a bad history with them is not a good ban reason. Just because you are perma'd from his server does not give you the permission to ban him from this server.
"You can't ban people from /your/ server!!!!"
but no seriously it's reft's server, he can ban whoever he wants, for any reason or rule, at any time(that's why it's his server). If you think that's stupid, feel free to say so, but take note at how this forum runs. Not exactly a democracy, huh?
Saying something that is on the E-Tard filter one time isnt worth a perma-ban, unless you are a badmin.
If someone you disliked for being a stuff in the past came in your server and started trying to abuse loopholes in your rules, would you ban them? I know I would, simply because it already becomes obvious it doesn't stop there.