Things have gone haywire in frame 6 - the club head is too far back away from the target leading to massive throwaway in frame 7. He needs to learn to retain his angle from the top right now before this becomes ingrained!
I see the loss in angle, student does a good job of not flipping it from frame 6.
Why do you see this happening, pivot issues, hand path, hand speed?
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"The only real shortcuts are more and more know how"...TGM
Not sure, honestly I would guess. If he was able to maintain that lag a little more I am sure it would only help power wise and low point control wise as he gets his hands in a pretty good impact alignment.
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"The only real shortcuts are more and more know how"...TGM