User blog comment:Nightband/Season Seven Plot Hole?/@comment-71.236.88.157-20121213235809

I have a theory, actually.

So, IF Dick Roman had a soul, he WOULD HAVE gone to purgatory. When things die, their soul goes to the afterlife. What if killing Dick created a sort of vacuum - purgatory tried to take a soul, but there wasn't one there. So instead of Dick going to purgatory, everything within the range of the vacuum (Dean and Cas) got sucked in.