Dean Winchester's soul is priceless. His soul is the Hope diamond of souls, the largest pearl, the clearest ruby, it is more precious than gold. Dean Winchester's soul is the soul that broke the first seal that locked Lucifer in his cage for millenia. It is the soul that has shared space with the body of the one true vessel of Michael. Dean, the servant of Heaven, the righteous man who opened the gates of Hell.
Dean Winchester's soul would be the most desired soul, the most powerful soul in the universe.
It would be coveted by both Heaven and Hell.
Dean would risk his soul to search high and low for the lost soul of his brother. He would separate from his body to search the spirit world for Sam's soul. In that state, he could be captured.
I can't predict what angels or demons want with souls, but whatever it is, you can bet Dean's is the primo soul to steal. Even the monsters want him to join their growing families.
So what of Sam? His soul is worth a lot too and whomever really holds it (I have a hard time believing it is a demon) must be gettting something from this. All these monsters recognize Sam is soulless, but Cas can not? Why? Are the angels in on a plan to use the Winchesters? Cas did say he was doing "regrettable things".
I do believe the body that looks like Sam is really a golem. I think that when Sam fell into the cage his body died and his soul was spit out either to purgatory or Heaven. I think only angels can put a soul into a body. I think they have Sam's soul hostage to be leverage to Dean.
Dean has always had his strength in this soul, and Sam in his body, but this Sam, who is ruthless, is not using magic mojo, that's fishy. Thus, the golem theory.
Dean will be likely visiting the spirit would soon. Hope he isn't kidnapped.
