Over the back, ON the back RM article

[Camron Rust]

Originally Posted by M&M Guy

But what about the very next section - 4-24-1: "It is legal to extend the arms vertically above the shoulders and need not be lowered to avoid contact with an opponent when the action of the opponent cause contact."

That does seem to directly contradict the author.

Which is directly followed by ...

This legal use of the arms and hands usually occurs when guarding the player making a throw-in, the player with the ball in pressing tactics and a player with the ball who is maneuvering to try for goal by pivoting, jumping, etc.

I see the possible distinction between the two rules as the timing of the action. If the arm are up and have been up, it is legal to leave them there...no requirement to get them out of the way. However, a defender will not be allowed to raise them at the time of contact without LGP while a guard with LGP can raise them or jump simply by having LGP without risking a foul.