High school kid trying to impress at college camp

I would just like to know, wtf was he trying to accomplish. He was smooth with his movements, I will give him that. But it was still pointless, and ultimately, he just tackled himself.

But you would be down in college. And it looks like Vick is down there even in the pros. At very beginning of clip, looks like defender got a hand on him to make him stumble.