Alright, I don't really care to follow how this all went down.
If someone is being retarded and putting stupid shit in their signature, give them a warning. If they do not take whatever it is out, OR if you remove it and it ends up back in there, I'd give a 1 week ban. If after the week is up they are still a dumbass about it, extend the ban longer.
No need to ever retaliate by putting stupid shit in anyone's signature, changing posts, or anything like that. We bitch and bitch and bitch about the "little kids" on this site but then the same kind of childish shit comes from us. Be the end of it.