Dillon will be fine. The weather will take a turn for the worse, and the Pats will run more when the situation calls for it (poor weather, up against a better secondary, bigger lead, another active RB, etc). Corey will be up and down because Corey Dillon goes up and down, but you'e all over-reacting to one game.
And, might I add, he had 86 yards! Would you rather he rush 22 times for 53 yards? It's gonna happen. It happens to nearly every back.