This is a situation that calls for a change midseason. Lunney out, McDonald calling the plays, as mentioned earlier in this thread, seems reasonable to me. We also need the QB under center. If Kreutz can't handle it, put someone there who can. Run and pass forward, not sideways and backward.
Stop running and passing into the strength of the opposing defense.
There was an article a week or two ago about how the Michigan strength coach was the real secret behind their success. I wonder if Tank isn't as good as we thought? An offensive lineman gets pancaked by an edge. We can't gain an inch for a first down? We have trouble with solo tackles even with both arms wrapped around the player?