Orifice Posted:

Faraday says they need to destroy the time anomaly under the station when they drill into it, to prevent the original Incident that meant they had to have someone pushing a bumon every 108 minutes, so that the plane won’t crash in the first place, and everything will go back to normality. This kinda contradicts the “what happened, happened” thing

Sort of. He explains that because its their present, they can do whatever they want, and that he was wrong about “Whatever happened, happened”.

Of course, they could pull a mind**** and say in Season 6 that the hydrogen bomb WAS the Incident all along.