That 3rd and 1 in the middle of the 3rd quarter looks to be really curious line blocking assignments to me. Or perhaps someone just screwed up. Haynesworth slants inside Kosier and Kosier does a decent job of standing him up inside. Haynesworth wins the battle of the push, but he's not in a position to make a tackle. This should create a lane outside Kosier in the B gap. But Flozell is blocking in and lets the DE run free inside. I guess it makes sense to double up on AH, but when he slants in, it kills the play with almost no ability to run outside. Once that inside is shut down, and it was shut down quickly, Barber perhaps could have stuttered and give Deon time to block the DE, but I don't think he would have made it there either. Basically when you have a DE, DT and LB on that side, double teaming the DT gives you little chance of a first down.
On the 4th and 1 mid 3rd quarter, Barber had a hole. But he stands himself up and that's it. He has to lower his shoulder and power forward there.
On the 4th and 1 just before the end of the 3rd Quarter, Barber had a hole again and saw it too late. By the time he tried to hit the hole, it was swallowed up.
Barber just isn't running very well. The blocking isn't superb, but he's not doing his job either.