Definitely do NOT ban Spoetnik.  Yes, he's an evil asshole.  But this is clearly due to some kind of mental illness.  Schizophrenia would be my guess.

I honestly feel sorry for the guy.  He clearly doesn't have anything else going on in his life, so taking away this forum would be devastating.  Just let him rant, like the crazy homeless man on the street corner.  He's harmless, and you can always ignore him.