Agreed. How many stories did we see of E.J. "fixing" his footwork during the offseason and training camp, only to see him revert back to bad old E.J. during live action?
Muscle memory is autonomic. That's why it's so hard to fix, even with NFL coaching. When the play breaks down and the player has to improvise, there's no way his 'learned' routine is going to come riding to the rescue. It will be all reflex and natural tendencies, which in the case of Allen is what's so concerning...