Meanwhile Sam doesn't want his soul back and calls Balthazar to help keep his soul out. He tells Sam that there is a spell but he needs the blood of his father. He needs the blood of his father, but his father need not be blood. So of course it's Bobby! So Sam tries to get Bobby and in the end as he's about to stab him Dean comes and saves him and they lock Sam up.
Dean meets with Death again and they talk. Even though Dean took the ring off Death says he'll get the soul back because Dean is on the right track with Souls and he will be useful.
We end with Death coming to Sam, who is tied down and Dean & Bobby watching while Death puts his soul back.
So will Sam be back to normal or will something still be wrong with him? We won't find out until January.