I understand that he is quite a talent and dropping the jersey seems to me an act of frustration on his part but come on, he has to be better than that. This is the NBA, the pinnacle of organized basketball, the premier league, the least he could do is to act professional in front of the media. Anyway, it's his loss anyway acting like a spoiled brat.
He knew going in that there was a chance that Philly would draft him despite his agent's bidding... Just the basics man - common decency, manners, courtesy and respect...