Tim Ferriss and Five Minute Workout
Saw your video and was impressed with your ability to complete the test. I'm assuming that since you posted the video you were looking for commentary and the "comments" were off on your video.
Couple things. I think I remember reading that you tweaked your shoulder at some point in time. If you tame the arc (think zipping up your jacket) you will feel more comfortable snatching. If your arm stays straight through the range of motion the exercise resembles a hybrid, extended swing.
Also, if you drive your hips crisply and pop them instead of thrusting them you will generate more power from the hips and that's really where you need to initiate your force. Hinge at the hips so your hammies help too.
All the best,
Sandy Sommer, RKC