Well, there is a video of the incident and I'm sure it will pop up soon. But the article states that De'monte was punched in the face and bit in the arm, hard enough to draw blood. And the coach from Hermitage publically stated that his kid was "in the wrong".
You can't being getting into fights on the court, but if someone bites you hard enough to break that skin, in my mind, that warrants fighting back. Apparently, the police are looking at the video to see if charges will be filed. I would imagine those charges would be against the "biter".