Yes, Chuck got angry and decided to end all his worlds so he can restart and make new ones. We had to stop him. Or, we were trying to. Now I don't know. I was kind of the key to defeating him, and I'm here.

[ They couldn't do anything without Jack, he was the only chance they had against his grandfather. It's left him feeling very guilty and helpless about being here, that he's left his remaining family lost and alone behind him. But if Sam is here, and it can be out of time like this, it means they aren't lost. He might be able to go back to when he was and finish it like they needed. If they're in a pocket dimension until then, it's not over.

Jack watches him anxiously as he reacts with frustration, but he does understand. He's feeling particularly needy at the moment for Sam's attention and he can't take his eyes off him, as if even blinking could mean he'd be gone. Castiel not knowing him has been a disaster. ]

He's unwell, Sam. I can't help him. I just make things worse.

[ That's how Jack feels most of the time but especially in this situation with Castiel. ]

If you could reassure him that I'm not lying, I would appreciate that.

[ Castiel did allow him to stay around him but it was clear he didn't believe anything that Jack was saying, or at least not a lot of it. It was a lot to take in. Jack intellectually understands that, but he's a child desperate for his parents, and one of them doesn't believe him.

His eyebrows furrow at Sam. It occurs to him that Sam is from before Lucifer's death which means that Jack was at a point where he was trying to open up to Lucifer. He feels stupid about that now. Lucifer was so good at manipulating him. ]

I'm glad. He hurt my family, he betrayed me. You were right from the start, he's evil. I would kill him myself if I saw him again.