He is so prideful that he rather lose his way than see the QB or other players and the coaches on the team win their way. The fact that he didn't man up and admit that it was wrong to call for a run in that situation, let's you know that he either called those plays himself or told Kellen Moore than running in that situation was for the best, even if the running wasn't working in that situation.
Some think that letting Dak go and keeping Garrett is all the answers that this team needs and that this team is automatically Superbowl bond if they draft or trade for the QB they believe will take the Cowboys to the promise land. Yet, Garrett has failed with Romo and Dak and hasn't changed his ways with the awful play calling and bad coaching decisions in big games. Unless the next Cowboys QB comes in and changes up bad play calls at the lines, we are going to see ourselves in the exact same spot. If Garrett decides to still run it after Dak has been lighting it up all night, what makes some believe that he'll trust the next Cowboys QB to win a game like this, with a top notch QB performance?
Garrett used proved what I've been saying all along, he is going to get in the way in any young QB's development and success with his way or the high way attitude and arrogant nature. Because it takes some type of arrogance and selfish pride for a coach to keep wanting to go with his game plan to the detriment of his young QB, when his game plan isn't working and his young QB is having the game of his life. Suddenly another young QB is going to make Garrett change up his play calling, as if we didn't see Romo constantly have to change the plays at the line.