Local deception or not the stay & scrutiny will of course will be Central Government.
It does appear to a non local that Luton Council is just hedging all & any bets.
Even if Luton Council is a proponent & facilitator for expansion eventually in any airport development planning involving over 10mppa automatically triggers being called in by the Government & a national enquiry I`m afraid.
Who will be paying for any mooted "2nd" Terminal?