Great to see the Mike O swing. For some reason, I always had this image in my mind that you would look a bit like Homer Kelly...don't ask me why!
Few things that jumped out at me, but I'm not suggesting you should go and change it. You hover the clubhead before taking it back. Your shoulders are very closed at Address (espcially relative to the comparatively squared away position). Your right arm is very straight at Address. There's this slight jerk at the last part of the backstroke, where your hips and shoulders suddenly turn a bit more, and your pivot center sways a bit -- probably a flexibility issue combined with the fact that you are trying to get to the very End. The early Sweep Loading Action, which looks a bit "muscular" and rigid to me, might cause you to find it difficult sometimes to throw that sweetspot against your Lag Pressure Point for Drag Loading.
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