I don't think they will do that, but they need to stop with alternating Williams & Corum. Williams had 12 rushes for 91 yards and the Rams should have kept that going. Major difference between the two is, when teams stuff the Run, Williams gains two yards and Corum loses 3. Big difference between 2nd and 8 vs 2 and 13.
The 3 runs from the one yard line was an excellent example, Corum gets stuffed and on 4th down, they bring in Williams and he scores. Enough, I don't mind keeping Williams fresh, but you don't need that much of Corum to do so IMO.