There were some small little details in his video that I picked up on on how my Kuzushi wasn't working properly, and in particular, effecting my ability to throw with two throws Sasae Tsurikomi Ashi and Hiza Guruma. I picked up on these details - a little twist of the wrist when pulling, and turning your head to the side slightly - and BOOM! A throw which I had great difficulty performing before suddenly became very easy. It's still far from perfect, but those two little pointers made a world of difference.
Interestingly enough, I don't think that anyone who has no clue about Judo techniques could possibly learn such a complex throw simply by watching a video. I think that the point Mr. Swain makes is simple if you could learn from a video, why not make a video for beginners instead of for instructors? The answer - because you really need to learn these throws hands-on.
The details helped me because after years of instruction on how to execute this throw, I was still missing something that I needed to spot for myself and myself alone. And now that I have it is amazing how much difference these details make.