Back Protection - Say if a Rogue is stabbing the paladin in the back, this would 180 them and put them in the paladin's front.
Strong Peel - If a warrior is training the paladin's team' flag carrier, and the paladin is chasing warrior. The divine storm would 180 the warrior to behind the paladin providing a peel.
Interrupt - It could be another interrupt just like how death grip interrupts casts.
Since it is done by glyph and only works against players it would have no effect on PvE.