I'd really have to watch the episode again, but did any of the old-school group actually express confusion? Maybe they did know it was going to happen but we don't yet know that they knew.

Ooooh. Ooh. Interesting theory! I mean I don't think it's 100% compatible with their actions, but that doesn't mean it isn't true :D And certainly Arthur was very prepared.

Agreed about the Haitian. Though he has the memory wiping ability too, maybe he was doing that at the time.