Great point which reminds me of something else disconcerting about the ending: Kevin & Julie were sent back to Earth before Julie's parents' death in hopes of preventing it while being completely unable to prevent the other events of the film. By doing this aren't Julie & Kevin now trapped in a perpetual loop in which they will forever be forced to fight with He-Man against Skeletor's forces albeit with Julie's parents alive until they are mauled by Beastman or executed by a squad of Skeletor's Centurion Shock Troopers? Do they at least act surprised?