I've never actually heard of anything like this. I really don't know what it was, but it seems to me that the realization that something was happening that really couldn't, and then the arguing with yourself over it probably just overwhelemed you and caused you to wake up? maybe the stress just...happened to make it "explode"?
while I've never heard of anything particularly like this, I wouldn't consider it unusual...just an intense, emotional dream is all.

just my thoughts.