Agreed, hence that other thread going on here showing that people are giving Dinwiddie way too much of a pass for this nonsense. It's been proven by Gary Crowton that If your OC is unprepared, unqualified, or clueless, your whole offense will go down the tube.
I think Dinwiddie gets cut some slack because he was never supposed to be the offensive coordinator. He was hired as a qb coach and he's brand spanking new to coaching, no way he should have been thrust into the OC role that quickly.