Escort To Transportation
b) Key Points
Be sure to control his arm and hold onto his shoulder so you can guide his movement, prevent getting headbutted, and facilitate a takedown if needed.
PRO TIP: The rear, escort double-twistlock always requires a crossed-handed grip, then turn the hand in the direction of the thumb as it crosses over the palm (Rule of Thumb).
Avoid grabbing the chain—it feels no pain, so you have little to gain (except maybe an injury to your own fingers).