It was obvious to anyone with emotional intelligence that he was breaking down because he was mad at himself for making a stupid mistake - not because he was mad at being punished. And that was confirmed when he stated that exact thing in his apology.

If you can't tell the difference between those two things, that's your problem, not mine. And it would also be kind of ironic, since you're criticizing Walker for his emotional immaturity while you're right there with him.