Actually, as you just learned, getting banned doesn't get you out. It only locks your account.


EDIT:
More importantly, our (unwritten) procedures are pretty simple when it comes to removing accounts. We will actually remove an account, but only if it has no posts or has only created threads with no responses. Once the person has posted into an existing thread or gets a response to their own thread, then it starts impacting other people's thread and post counts, and thus we ask that people simply abandon the account (they can change the email address in the profile to make that disconnection).

In short - had you not posted to this thread and simply had sent a request to an admin to remove your account, it likely would have happened.