Pretty sure London did get a flag. Regardless of how people look at the infraction if it's there the coaches must make sure the players know and they are then held responsible. And maybe a weekly slap in the head to every OL guy to check to make sure he's not lined up past the ball!
Pretty sure London got the penalty. Regardless of how anyone thinks about the validity of this "infraction" if the refs are calling it, the coaches have a duty to drill it into the heads of every guy on the field. We have certainly had discussions here about what calls are suddenly in vogue around the league, shouldn't the coaching staff be on top of the situation? And maybe someone should supply a weekly head slap to every OL guy to make sure he lines up behind the football.