Like you said, he's a 30 year old running back. He doesn't have long. And like any professional, he wants his big pay day before he's "retired." I'm pretty sure all this attention seeking is just so that he is given more snaps to highlight his productivity >> so he gets a better contract>> so he gets paid more >> so he when he is pushed aside with either CJ or someone else taking his spot, he can retire a rich happy man.
Closed mouths don't get fed.