Like JG didn't realize he had screwed up? Like everyone didn't know it? If you need your boss or your wife or your husband or your colleague or your parent to yell at you to understand, that's a "you" problem . . .
The vast majority of the time, however, the yeller or screamer or violent one has simply lost control of themselves and nothing demonstrates a lack of leadership more than a lack of control . . . as a matter of fact, most people simply lose respect for that person . . . and tune them out . . . and stop listening . . .
I absolutely agree, however, that different strategies work for different people, but there is very little supporting evidence that yelling, beating, or humiliating people elicits positive behavior change. On the contrary, there is quite a large amount of supporting data that shows that yelling, beating, or humiliating people elicits negative responses . . .
Either teach JG better and correct his mistakes and put him back in or bench him . . . but yelling and screaming at him . . . does nothing but make the yeller look a fool . . .
did anyone whoever fumbled not realize that he fumbled? I mean consider the absurdity of this: "Man, thank god Coach yelled and screamed at me or I would have never understood that fumbling was bad or that I need to take better care of the ball. If Coach had taken any other approach, I would have continued in my ignorant ways."
I mean, c'mon, man.