Originally Posted by indesertum
Incidental Contact: The mere fact that contact occurs does not mean a foul has been committed. Players are allowed to contact other players when reaching for a loose ball, or when performing normal offensive and defensive movements. The hand is considered “ part of the ball” when it is in contact with the ball and contact with a players hand when it is in contact with the ball is not a foul.
What about contact with the wrist and palm, impeding the forward motion of the shot, causing the offensive player to lose control of the ball?
I would agree with your interpretation if Plumlee stuffed the ball first, and in either his or Lebron's follow through, their hands or arms made contact with each other afterwards. The typical enforcement of "incidental contact" is to not call it if the outcome of the play was not affected or had already been decided.