lol, no I've never heard of the spiraling technique. I read the link, and I think there could be come truth to it, seeing how the lats are fricken huge in general, and crosses much of the body. From a shoulder health perspective it sounds good too, because the shoulder is the most stable in internal rotation + extension, and external rotation + flexion. Maybe I'll give it a try.
I didn't bother to go back and look at vendetta's posts on the forum, but I think he's also the JC Cooper guy on elitetrack.com. I believe when he was talking about rotation, he was talking about the spinal engine theory, and how the spine and hip rotates/oscillates to create force for the legs or something. Personally, I never really bought into it. However, I can sorta see how this "spiraling technique" is connected to the spinal engine vendetta/cooper brought up often.
Yeah, just watched that combine video. He has almost no shoulder movement lol. Maybe because he's like 5ft 4ish? That's pretty short for a sprinter(and football player). Maybe it's due to shorter strides, so his turnover might be faster? I'm not really an expert on this.
I'm also surprised he's hunched over. He's not even close to 6ft lol. Honestly I don't know why, but many football guys hunch over during the 40.