Nice clip.
However, when you observe the follow through and execution on the plays, you will see pulling guards not cutting up into holes.
The commentator only makes a passing comment on a great block by a FB or H-back which was the key block in the play which he ran back and forth 4 times. The two back set provide the ability to really mix up blocking schemes both in the run and on pass protection.
In Luce tua Videmus Lucem KRK