Then what causes the club head to move along a curved path from top to finish? Feel free to invent a new physics and explain to the masses.
Because the left arm/club is attached to the left shoulder and the right triceps pushes on them - pretty basic grade school level physics. You don't seem to be able to grasp the fact that in Hitting, the left wrist is uncocked solely by the right triceps.
The uncocking right elbow directly and completely uncocks the left wrist. The shaft does not freewheel through the release interval.