Definitely chewing on his lip now, and Sam makes a brief move as if to get up and pace, but it's quickly aborted with a slight wince. Not the time for pacing, perhaps. He doesn't want Dean to get worried about anything, not if he wants to make a campaign for getting out of the house at all in the near future.

Sam watches Titus with one eye, and mouths at Dean, Some kind of spirit manifestation? Vague, but it could be somewhere to start. Maybe.