So… new site member OnkleJimble, now named (account banned), recently coldposted a tale. It's currently at -3, and they posted the following comment: http://www.scp-wiki.net/forum/t-7996164/mothership#post-4023281
As of now, they are still a member of the site. The name can be confirmed by looking at the user profile and checking the edit history, which will indicate edits made to a sandbox with the previous name.
I'm not entirely sure if they're trying to pretend they were banned or make a similar statement, but uh… tossing this up for records keeping I guess.