Folks, these kind of hap - hazard techniques may get you killed if you try to use them in a real life situation. I am sure that the instructors have good intentions when they try to add "really cool stuff" to their curriculum, but they need to understand that they are doing nothing more than adding false confidence to some students while increasing their own liability.
All materials, methods, techniques, etc. that are taught in the classroom should come from one or more of the following:
A. Real life experiences of the instructor.
I teach two techniques in my class that I have actually used in real life encounters!
B. Techniques and methods that are passed on from other certified instructors.
Pulling something out of a hat or off of some cool video found on the net is unacceptable and cheapens the true value of the class.
This is one reason why the Missouri Association Of Law Enforcement CCW Instructors was formed and it's off spring, the LCM Program was born. The association contains quite a number of the best instructors in our state who have, as has been said, "been there and done that!"
Don't trust tactics that are taught by people who are not formally trained in them or have never used them in actual encounters! Just don't do it!