How do you think the player who didn't get out of bounds felt after seeing Dorsey lose his shit? A passionate coach can motivate players because they feel like he is on their side, but it also goes the other way sometimes.
He probably didn't feel supported and thought his supervisor was a bozo, just like I would feel if my boss started breaking his desk. These are all split second choices and these dudes were gassed as hell. They had their chance to make their play and Allen threw the ball in the dirt....then they needed a series of miracles and butt punts to have a desperation FG chance and it didn't work out.