Step back (to 6 o'clock) with your left foot when your opponent grabs your lapel with his left hand. Simultaneously pin his left hand to your chest with your left hand chambering you're right hand.
Torque into a right Neutral Bow, do a right Upward Block under attackers left arm to hyperextend or break their elbow.
Circle your right hand down, out and up, into an inward/downward Hammerfist onto attackers forearm. Make sure that your opponent's left arm is driven down and diagonally to your left.
Finish with a right inverted Outward Hand Sword to attackers throat and return to fighting position. Stance throughout is still a right neutral bow. Cock your left hand at your solar plexus, ready to check when needed.