When the attacker puts the knife to the defenders neck, hands go up to give the illusion that the defender is giving up.

Head leans away from the blade slightly

Right hand does a palm strike to the face to loosen up the attacker.

Same time left hand circles under the knife hand pushing arm upwards

Right hand goes to outside of right arm, pulling & bending the arm to grasp the left hand, taking down to the ground

Disarm knife and fisnish of with a cut