Ok. I agree with your assessment then.
He did not whine about things, he gave 100%, and he is one of the top RBs in the game. This injury is hopefully minor and does not complicate his situation.
The Bills should honor the verbal comittment (if they made one) and offer him a better deal to extend him. That would be the right thing to do and the Bills need to understand that news travels fast around the NFL. The Front Office in Buffalo is already considered suspect by players and agents.