Didn't play them in the regular season and personally wasn't involved in anything that happened, Obviously something did somewhere or sometime (based on the article). I wasn't privy to that incident. Nonetheless, it still doesn't show much composure from a Head Coach to conduct himself in that manner.
If you are a Head Coach and have issues with Parent's, there are ways to deal with it...Media, etc.
Don't take away from the significance of the victory that your kid's just experienced.
And keep in mind, Articles are Articles...go to the replay and look at the end of the game and let me know if you would appreciate your Head Coach acting in this manner. Didn't represent USJ in a good way, they have a class school and probably didn't appreciate it either.