It was an accident, plain and simple. Tony certainly never intended to hurt the kid, and I'm still not too sure if he even saw him until the last second. I mean, c'mon, who expects a driver to be on the race track after a minimal racing incident, on a dark track in a black fire suit and helmet?
Sad part is the kid paid with his life by using extremely poor judgment. If he had stayed strapped in the car, non of this would have occurred. His actions caused this to happen. Hopefully this will teach others in the future to stay put and not act out in this manner.