Unfortunately I don't have anything other than anecdotal evidence, but it's something I've worked on in my own field work after reading things here and in DGR's technique forum. I can get the same disc to fly slightly differently with the same angle of release by adding small amounts of wrist roll. The easiest example is making a disc thrown flat finish left, straight or right by just slightly rolling under or over at release.
I disagree on the throw at 0:41 btw, it comes across his chest basically flat and leaves his hand slightly hyzered.
On a collision course with 1000 courses, the only variable is time.