The proverbial lightbulb went on over Dean's head. "Yeah. He went in the House of Mirrors, too. It was grabbin' traits and powers from people who went in there together and switchin' them around. Good times. He stopped being a wizard. Guess the power came back and knocked out the porch lights."
Sam did have a point, but Dean couldn't help but feel the way he had when Jo came back. Couldn't anybody just take a single damn day and...y'know... not deal with the world ending?
"Sam, you..." Dean sighed. "Do you remember anything? It's... it's great to have you back, man, and I could sure use the help, but you were bunk buddies with Satan." Dean didn't exactly know what that specifically was like, but he remembered Hell. Vividly. He reached into his coat pocket and took out a flask, one that wasn't topped off with Holy water. This was Sam.
He opened it and held it out to Sam. This conversation would be better with liquor, Dean reasoned.