Wow I saw completely different offensive running plays than this guy:
1. Offensive play 1 appeared to be a RPO or at least it was RPO action. Look at the WR on the play side. This was to be either a quick hand off to the right with the option of a pass to the one WR who does not block but turns behind the line of scrimmage to be ready to catch the ball from Franks. Clearly the run part was to the right and the hand off was not based on what the backside DE did. The backside DE was not blocked as is often the case on running plays because he should be too far from the action to get in on the tackle. Scarlett maybe reading the point of attack block took the run about one hole toward the top of the screen than it was blocked for and that is what let that DE get in on the tackle. That said it was not a play that was stoned at the line of scrimmage or anything.
2. The second running play was as he said successful. Of course on 4th and 1 you stay on the double team part of the combo block longer. The one thing you must stop is penetration for a loss or a gain of less than one. The DL is threat to stop the drive. The LB is not that big a deal. So of course you are "slow" to come off the double team part of the combo block.
3. I do not have much criticism of defensive players particularly those not with their hands on the ground communicating before the snap. The issue on the play is that the safety went with the QB's eyes to the right of the offense as did a CB on that side. So the TE was open for a throw back play that not many coaches or QBs like, because you are throwing across your body. Certainly I agree that the QB was not looking so far right that the defense should have rolled completely to the right as they did.