Didn't Vinik give Yzerman stock in the team? From his introduction speech, unless there was a major falling out, it sounded like Vinik was going to give Yzerman a blank check, free reign, and unlimited chances.
That would be incredibly stupid. Everyone needs accountability and Yzerman had 0 experience as a GM. No way Vinik would allow the team to get run into the ground if Yzerman flopped.