Astral Projection, Lucid Dream or just a normal dream?

I was getting interested in Astral Projection and OBE so I watched this video http://www.youtube.com/watch?v=QZfuntnZdcY&feature=player_embedded#at=1520. I started to believe in it but I was too afraid to do it. I felt asleep, and just when I felt I was going to wake up... I tried to move out of my body with a lot of aggression (I wasn't planning to do so, I was just doing it, for I don't know what reason even though I kinda wanted to try it). I started shaking really really fast so I got scared and stopped. I tried 1 more time and said to myself that I was gonna do it this time. I tried again and got all through the shaking ( I was shaking like 10-15 seconds ) when suddenly I felt like someone ( a demon?) is using like a spell to keep me unmovable on the bed. So I ask... "why is this happening?" and a voice is answering to me "(something I didn't understand) pray... Have you planned this?". And then all of a sudden like really strong waves of wind starts blowing. Then it started to feel like I'm getting buried under some material like fur or something... I can swear i felt every bit of it... So I was wondering... Can this be an AP? I thought that takes a lot of time before you can achieve it... I'd be glad if someone told me where did I do wrong.