I would recommend that Qar spark a Jay, buy a Mac, and stop sweating the trivial details of life. Then climb a mountain on a journey of self discovery, and find someone with the same direction. Then spend the rest of their lives together and raise children with the wisdom that his prior disposition was all a big mistake. If a ban is something that helps in this end, then I am in favor.
If I'd be in your chair, I would hire him as a coordinator and see what he can do to improve your organization, allow him to do minor goods or faults and just see if it works out. Because he is fanatical about your company regardless how bad stuff you do is. Maybe you lack.. fanatism, that he has. I don't know.