If you die in a dream do you still wake up?
Its in the streanght of the energy that make your death in the other realm, if its too strong, then yes you will not wake agian. But then thats like saying if I drive faster than the speed of light I can go back in time. It has not been proven in person yet it can't be ruled out. :)
Tannerr07, yes it technically can happen, though probably not the way you think. You can't ever become trapped during AP, you can only think you are. The only reason I can think of that someone wouldn't return from AP is if they were either convinced that they could not or did not want to return, essentially becoming a ghost. Both of these things are highly unlikely though, even if they are possible. The only situation I've ever heard of someone become "trapped" in such a manner resulted in the person's soul being "picked up" by the denizens of the afterlife.