Thank you all for the responses. I didn't realize it would bring up such ill feelings towards this company.
I can say that some of the ideas I saw in the video do seem a bit out there, or stretching, but I figured that was because I didn't understand them. However, I did some research on alignment in the golf swing, and a lot of what they're saying is true. I should have directed my questions to the idea of measuring knee angle and alignment.
The reason I'm asking is because I was looking for more control with my golf swing, and I've been taught to restrict my swing - which in turn has taken yards off of my drive. The video is saying that not restricting your backswing and focusing on your alignment and stability will give you the distance with the accuracy.
I have been practicing the last few days on keeping my hands on plane at address, and fixing my alignment - it has been successful, but it also is pushing my comfort with my swing. I do know if I want a good swing I need to give up the comfort.
Anyways, I'm really overwhelmed with all the negative comments I got back, so maybe you guys can help me here..
How do I drive the ball farther and more accurate (Without restricting my backswing)?