There have been a couple of people who deliberately got banned. The ToS clearly says that you can't have two accounts at once. It doesn't matter if you use them both or not. If you want one disabled, just let the mods know. It's not a big deal to switch accounts, especially if you are being stalked.
However, the nude avatar banning is a new thing, since I resigned my moderatorship.
When I was a mod, I used to send people with nude avatars a PM that the avatar was not allowed and then I would change it to one of the preloaded avatars on here.
Then the people could change it to a custom one that was not naked. Most people don't know about the rule, because they never read the ToS. I think that a polite message about what is allowed in avatars is all that's needed, because in most circumstances people would send me back a note saying they were sorry that they didn't know, then change it to something that would fit in the ToS. I don't like the new "zero tolerance" rule.