I don’t believe he wanted to run the football any more than they did. They found a way to scapegoat the end of season failure, by pointing at Moore. They needed a narrative since the offense was already lighting it up, so they said the run game. Dumbest message from this organization I’ve heard, and fans (mostly who wanted the blame on Dak deflected), bought it hook line and sinker.
The proof is in the results. It was either a lie, or just a big coaching failure, or both. In either of the cases, Mac should be fired.