the thing about Manziel is that he is a dual threat to the caste system (no pun intended).
Number 1, he is a mobile qb that can run the read option, and really doesn't even need the read option to gain huge chunks of yards with his legs, he is like Barry Sanders out there running it, and has a great arm. Yesterday looked like it came so easy to him. They don't want fans to think that a White guy can do that on the highest level, and I believe he can.
Number 2, he isn't acting like the typical boy scout, and even worse to them, he isn't apologizing about any of his behavior, he is basically saying a big f*ck you to the NCAA, NFL Scouts and all of the people who hate him (at least in their eyes). His actions suggest that he won't change. If he would have said he was sorry, typical apologies with nothing but good behavior they would be talking better about him, but with his attitude of not caring what they think or say, what would happen if he did know about the caste system? I really think Manziel would be the athlete to talk about the double standards that exist between White and black athletes and everything else in the book if he knew about it, I am sure he has to be at least aware of the double standards right now, and believe it or not, info about the caste system isn't that hard to find so I wouldn't be surprised if he came to know more about it in the future, being friends with Swope helps this because something fishy happened there. His family has a ton of money, so he has nothing to lose, and he doesn't have the character of an Andrew Luck. Matt Jones should have said something because it appears he is making money just fine without the NFL, but appears to be too laid back.
they might Tebow him, but they are scared to death, because he isn't going to keep his mouth shut like Tebow, so they are trying sabotage his character any way they can right now so it looks like he is just upset that he couldn't hack it in the pros.