There were two ways to go about this: backtrack and clarify, being as this was most likely train psychology, not any kind of human psychology.

Or: "Yes. We have also, within the past four months, encountered another world being destroyed in the same manner, on a planet containing a kingdom we were supposed to help save from an unspecified disaster. Apart from the train experiencing some internal false alarms, we had no warning."

Well, those who had stayed on the train had that warning; those who had gone had even less.

By this point Webmind has stopped walking as well; other passengers will just have to deal.