I used to experience ASP about once a year when I was a young child, although I didn't know what it was until you just now explained it.

I had this dream, but I was awake, and the furniture (chairs mostly) were closing in on my bed (I assumed getting ready to attack). They also blocked my bedroom door, so I couldn't get up and leave.

I was definitely awake during this dream state and was yelling for my parents to come save me. This happened once a year like clockwork, and happened about 3-4 times. It scared the hell out of me.