This is the first time reading this forum...I have never been abducted and I don't know much about the subject of abduction. I found this post intersting though. I took first year psychology and know that there is a psychological explanation to the fact that some people wake up and are unable to move.
Normally, when you wake up your nervous system kicks in immediately and you are able to move around normally. Some people wake up at times and thier nervous system simply does not activate normally and they are not able to move thier limbs and body even though they are awake. The nervous system simply takes longer to activate fully in some people, sometimes. It can be a frightening experience to some.