I don't know how the back can be blamed for 9 yds on 10 carries when his long was 13. That means his 9 other carries yielded -4. This is not a case of him missing holes or hitting the wrong ones, or running tentatively etc. He's not even being allowed to get outta the backfield.
Without watching the game, my guess is the Titans totally didn't give a fark about a passing threat, and ganged up with 8-9 in the box. JC would've had a hard time doing anything against 9-man fronts.
The Ravens better be shopping for a veteran QB, else this could get real ugly.