This is the correct answer. CJ is the starter and he's earned it. They have faith in the RB, just not in the line, that's why you saw only 9 carries last game. Not to mention the Rams line was dominate.
Manning trusts him as well so that another plus in his favor.
You might look at his rushing last game and laugh and say we need to scramble and pick up one of these guys, but if you look at his receiving yards, and how he picked up those 87 yards it makes sense to stick with him. He had a pretty good games against the Rams considering how we were pushed around.
Plus they are not going to add someone when the guys that are out, won't be out for too long. Makes more sense to add a olineman at this point to shore up the run game as well as get some of these guys back into their natural positions. If they add anyone it will be a lineman, a LG, and most likely Incognito,
I could be wrong of course, since I'm speculating.
