Anything is possible, but by all accounts, Hanley knows exactly what the situation is. He realizes that if he isn't hitting, he's not getting the at bats. I don't see him making a fuss if he is being treated fairly in terms of the # of at bats he gets.
Now if he's killing the ball and the Sox bench him with the sole intent of not letting his option vest, I think Hanley would have a reason to fuss, no?