I think most people would err on the side of "expect the worst" when they are confronted with the unknown and thrust into a situation like this, especially with all that has gone on.
And this is an email I got from a friend regarding possible future episodes (highlight to read):
From Watch with Kristin:
Tubers, I tore myself away from the TV on Tuesday night (thank God for TiVo) to go to a Green Day concert, and was I ever glad I did. As I walked into L.A.'s Wiltern Theater, I spied the mug of the gorgeous Matthew Fox! It turns out he's a major Green Day fan and flew back from Hawaii just to see the show. He told me he's been friends with the band for several years and has been interested in their music for even longer. When I asked him if the rest of the cast was jealous that he took time off to come out here, he smiled and let me in on a little secret. "Yeah, they're probably a bit jealous, but we all got some down time. Actually, none of the regular cast is in the episode we're shooting right now, so you figure that out!" Hmmm, I wonder what other actors are working this week...