We rarely get to see Dean so worried about a situation, that end bit just tore me apart as well ;_; oh, boys. What will you do?

WLEKFJAWSD DEAN STANDING UP FOR JOHN *ded*

I was thinking the SAME thing about Sam. There were parts in the episode where I was convinced Sam was the shapeshifter because he was so... cold! And dark! :( This makes me worry even more...