Chris. I don't doubt your sincerity. I ask you to do one thing though. Next time the person grabs your wrist/back of base of palm as you describe change your purpose. Have as your purpose to remove your hand. I am 100% certain you'll find it easier than if he was holding the wrist beyond the wrist joint.
Your mention of non compliently is a word all too frequently used on these forums in my view for of course he's being complient by holding the way you instruct him to. Even a boxer sparring is being complient by sticking to the agreed rules of boxing.
Anyway my intention is not to make you wrong or to argue so I'll bow out.
The video you are watching is a demonstration. He is grabbing compliantly to demonstrate this technique. If you'd like to see some of our non compliant stuff, check out our youtube page.