I don't buy it either. Someone made the decision to abandon the plan. Whether it was coaching or Lamar, we'll likely never know. But it was also clear most of the game that the Chefs DEF front were dominating our Online with only 4 players to our 6. There were holes for runs but the change had the RBs and TEs blocking in pass protection, so the only runner left was Lamar. Someone here mentioned that Lamar, wanting to be seen as a passing qb, chose not to take off and run because that look furthered the view that he wasn't a true QB, but rather a glorified RB. I don't know the facts, but that is not a good look for him if true.