He’s still got a slightly bent back right wrist and flat left, the club is rotating round the left forearm via left wrist supination, club hasn’t passed his hands aka left arm flying wedge intact aka rhythm etc. You can even see the shadow in the back of the right hand. I’ve only seen one clear picture, ever, where he has right hand in flexion and suggestive of left hand in extension, driving the ball at Oakmont 1953 in grey attire and white cap, presumably hitting a draw and one video, Carnoustie 1953 black top, where you can surmise his hand action, again presumably hitting a draw/modified his hand action because of the hard turf.
Many videos that despite the low frame rate, show an intact flat left wrist through the strike even with the left wrist going from flexion to extension, indicating the club hasn’t bypassed his hands insofar as an intact LAFW. Especially those from behind.
Here’s a few that show his left wrist rotated to advance the club and didn’t break down:
