Titans running back Chris Johnson was surprised to find out that running backs coach Earnest Byner had been fired. "I'm not sure why it happened or anything like that, but you've got to go with the head man's call, whatever he decides to do, he's the head coach," Johnson said, deferring to coach Jeff Fisher.. "You've got to trust in the decision that he makes, he's a great coach and everything like that." Johnson said he's heard nothing but good things about new running backs coach Kennedy Pola.