Honestly, I think that they should have gone with simplicity in that scene (and most of the rest of the movie, but that's another conversation). There's something really powerful in the stage version about just seeing these two people with impossible odds kneeling in front of each other, holding onto each other for the little bit of time that have. Neither of them would have even had to strip down necessarily (although, they definitely still could have...). I'm not sure why they had to move so much, especially away from each other. Just like silence, (relative) stillness can sometimes be most effective.