It wasn't the act of slamming the kid into the chair that upsets me.
Accidents happen and the "heat of moment when going after a ball" is accounted for in my opinion.
He was a JERK and an ASS for not apologizing to the kid, giving him the ball, and his actions afterward. Acting proud of his handywork.
He knew a child was in front of him before he jumped, he knew he hit the kid after...but he has NO remorse. That cannot be "Blown up". That is fact.
He was a first class Jerk