Back from Hell. There was no other way of putting that. None..
And Jo knew the entire story. The behind-the-scenes, Inside the Actor's Studio version, too.
He shrugged at her question. "He's in one big piece. That's about all I could tell you."
Sam wasn't exactly showing his brother all the cards he had, and Dean knew it. He wasn't pushing it because he was glad to have Sam back at all, but he knew.
Dean stopped mid-swig of coffee and shook his head.
"No."
He wasn't 100% sure about this, but he really didn't think so.
"Sam showed up the night the Corn Maze went all psycho. Phaedra found him and took him to Harry. He just... showed up. Like he'd always been there."
That wasn't what had happened to Jo, so Dean was reasonably sure the two things weren't related.