You're right...you are going to get roasted.

"The father grabs this young man and slams him up against the wall and grabs this young boy around the neck and starts choking him screaming in his face."

Under no circumstances is this behavior acceptable. This man belongs in handcuffs. Even if the boy punched the ref, bit his opponent, spit on the opposing coaches, and cursed at his father, that is no excuse for physical and verbal abuse. Sometimes we lose sight of who is the adult and who is the child.