You’re dealing with a Dean that’s maybe a little bit besieged on all sides, and as Dean so often does, [he] throws himself into a case.
You’re looking at a Dean that’s still a little shell-shocked from everything that’s happened.
He’s walking not just back into himself after the last episode, but back into Sam, Cas and Jack, who’ve all kind of shifted over the past few weeks, [and] back into a bunker that’s suddenly full of a lot of hunters he doesn’t know or has very passing relationships with.