Well, it’s official: Jim Harbaugh is off to coach at the University of Michigan, ending a successful if stormy tenure as head coach of the San Francisco 49ers.

Harbaugh’s departure – or dismissal, the breakup may not have been mutual – proves what I have long suspected about the workplace: It’s less about what you do than how well you relate to the boss. Sure, the 49ers had a mediocre season (8-8) that kept them out of the playoffs for the first time in three years. But if mediocrity or worse were the real standard, Tom Coughlin wouldn’t be staying on as coach of the New York Giants. And Rex Ryan would’ve been gone from the New York Jets years ago. Instead he and Harbaugh are both exiting at the same time.

There’s also been talk that Harbaugh “lost the locker room,” particularly in his eagerness to get rid of former Niners’ quarterback Alex Smith. But it was clear after the team’s 20-17 victory over the Arizona Cardinals that the Niners went all out to win one for the Gipper, so to speak – to end their season and Harbaugh’s tenure on a high note. Nor would a team led by a temperamental coach who is said to be even more emotional in the clubhouse be likely to award that coach the game ball or shower him with ice water after the game if the members weren’t fond of him. Football players are not actors.