I thought I read somewhere a year or two back where Otto said he was enjoying teaching and hanging around the kids but that he had no ambitions of making coaching his new career. And you never see him front-and-center for anything, he was never in the limelight during his years with the Hitmen. To me, those are the actions of a guy who doesn't things to get bigger than they are.
If that's still true, then he might not want the head coach job.