The "Bully" said that Casey tormented him.....

AS IF!!!
Look at the way the little smart arse was shaping up to Casey, and how Casey was up against the wall.IF Casey started it, i don't think he'd be up against the wall.
Also at one stage he was asked if he regreted it, the answer was no, then he looked to his father and changed the answer to yes.

Stud through his eyebrow at 12 years old, JUST to show his attitude.