I'm not sure this is the exact same, but it is similar in that it was halucinations and fear while sleeping but i wasn't completly paralaized...
Twice that i can remember, both during exam times so it may be stress induced for me, but basically the first I was convinced there was an evil figgure in my room and started swinging at it (from a sitting possition in my bed ) I was told i was also screaming at this pont, also ended up connecting (non solidly ) with my dog who came to see what was going on)
the other was a vision of a giant spider on my roof of my bedroom and again... i started swinging this time i hit the wall hard and my hand was sore for a few weeks after that :P
I'm not sure if these are the exact same, but it seems similar?