yeah, it is part of the "night terrors" you can't move once you think you are able to. the sleep paralysis is unbearable, i feel your pain.
at the end of any experience, it takes a bit to be able to move any limbs again. a trick i learned early on to combat it is tiny movements. don't try to move an entire limb, or give all your strength to everything to fight it. move a tiny bit, start with your pinkie finger, move a little, then move on to ring finger, etc. it worked well for me. that was what i was getting at without being too dramatic with regards to getting out of the experience.
for me, at the time i wasn't on any recreational drugs, it was years after a lot of daily psychedelics.
and this even got me out of the cycle....those of you who have had this know what i am talking about. you have a night terror, you think you become aware, so go back to sleep, only to have it over again....you don't actually go back to sleep, you relax, stay aware of the surroundings yet it begins all over again...it is terribly annoying.