This part I can really agree with. My comments are less about the practitioners in the clip and more about a particular application that I don't like and feel should not always be so emphasized. IMO, when someone pushes on your right shoulder, turning to the right is the wrong direction to yield. You end up yielding your way right into a dead end that way.
Following the 4 ounce rule it would depend on what foot is forward. If its your right foot it will retreat with the force in that direction. If its left foot forward as your right shoulder retreats your left hand engages your opponent. This applies to grasps sparrows tail. To dead end doesn't happen as the cornering moves are bought into play. According to the rule you must always go with the force ( neither resist nor let go).