I am starting to lose respect for Jim Harbaugh. He still is going on and on about the 4th down play and how he was "cheated" on it. I'm not even going to go there again, other than to say he was wrong and that non-call was consistent with the way the game was officiated all night, but show some class Jim.
Anyone who coaches for any period of time will have heartbreaking defeats. Sometimes those defeats come with calls that don't go your way. That comes with the territory. But the good coaches don't whine excessively about it; they graciously accept the loss publicly (even if privately they disagree) and move on. They then find ways to use it to rally their teams in the future, while they keep their feelings in-house.
Jim Harbaugh wears his emotions on his sleeves. It's time for him to grow up and take defeat as a man. If he is not able to do that, he won't be coaching for long. And that would be sad, since he is a very talented coach.