Your kid is a bully. He starts to believe his own propaganda and takes on a kid twice his size, and gets body slammed for his error in tactical judgment. The event has gone viral on the Intertubz because people are getting sick and tired of the kind of crap your kid perpetrates and are tickled to death to see someone fight back successfully. And you want an apology?
I think I see how your kid got to be the way he is. Up yours, Mom.