It's permanent according to Geth. And given how he was sockpuppeting like mad and then suddenly stopped, I'm of the opinion they IP banned him, or threatened him with legal action, or both.
Global bans are not handed out lightly, this guy got four, and even Wikia was getting their already thin patience stretched by number 4, so yeah, Moleman must be deluded if he thinks getting them dropped will be his Christmas present.