Castiels growing desperation, and his willingness to lie to Sam and Dean now puts him on a very slippery slope.
I was also impressed with the production of one key recovery for windows 7 the episode as a whole.
Would they have to stop him?
Time to mount up and hit the trail.
I do hope that Castiel doesnt end up as a villain, or as someone who needs to be stopped, as I really like the character, and Misha Collins portrays him brilliantly, but at the same time the signs we are seeing seem to be pointing.