The above picture shows the attacker grabbing the defender in a head lock. The defender must remember to react immediately. The minute the attacker grabs around the neck the defender should immediately strike to the groin as shown in the picture below.

After the defender strikes to the groin they reach up with the front hand and grab the little finger (as shown below) and begin to pull, twist and rip. As the attacker releases his grip the defender may now run maybe doing a quick back kick as they flee for help.