What we do know is that he was in a situation where the coaching staff served him, he was thrown the ball early and often, and his offense put up big scores. There he was only moderately happy and still didn't stay out of trouble.
Now he's in a situation where the coaching staff won't serve him at all, his production will be sapped by a huge stable of wide receivers, and there is question how big a role he will play in those big score victories.
I don't worry about how he'll interact with his teammates. He interacted with them well in Minnesota, he did the same in Oakland. However, if he feels even slightly dissatisfied with the coaching, we know he'll take plays off. If he get frustrated, either by losing or lack of balls being thrown his way, we'll see what we saw in Oakland.