The alternative to keeping Igor is just as scary - Sarver and James Jones selecting a new coach.
I could see Sarver making Jones the coach, if Igor is let go. Not that it would be a good move, or a bad one, but it would be a "save your job" sort of situation that I don't think would play well. Sarver doesn't want to pay multiple people who are no longer with the team but he would be if Igor is let go. I think Watson's deal expires at the end of this year and McD's is still running as well. We're far from being the Cavs, who are paying at least 3 coaches right now not to coach for them, but it wouldn't be a good look.