I would be very surprised that even an MP would go so far as to issue blatant lies in this manner
Well, it does come naturally to them, but it's quite possible the pilot's comments were just misunderstood because they weren't actually in clear enough grammar.
Put it this way, I'm flying from BRS - BFS on Saturday and back again on Monday, both with Easyjet. If I thought there was a problem with the runway I wouldn't be going from Britol, I'd be off up to Brum or Eefrow.
Easyjet are prolly just blaming the recent events to justify the delay to the pax. It's possible that their pilots are not capable of using any runway of that length if it's been assessed as 'wet/wet/wet' or they have changed their SOPs since December because of what happened, just to try and show that they are safer than safe. If so, it doesn't show any confidence in the airport even though Easyjet's own Ops people assessed the runway as perfectly safe.