That is one hell of a relief. It's not that Sinclair thinks he'd never get out without Jack, he had some semblance of a plan before they met, but it would be one hell of a lot harder to do.

"I'm glad to hear you say that," he says with a smile, rising to his feet again. "What do you say we find that code and take a look at our new submarine?"

You know. If the code wasn't burned along with all the other stuff Jack was so terrified of Sinclair discovering.