Great. Even if Abadar's bargain with Asmodeus still prevents Cheliax from kidnapping or Maledicting Keltham, which is, possibly, something else that should be asked about if it hasn't been asked already, there might be other world actors with an interest in not having Keltham destroy circles carved out of Cheliax.
Keltham needs to do his best to dump his guess about how to destroy sections of country into an Iomedan cleric sworn not to use that info without permission from Keltham, unless Keltham is taken off the gameboard by non-Iomedan forces, in which case Iomedae's adherents are free to do whatever they want with that info and are specifically encouraged to use it to destroy Cheliax if Cheliax makes trouble.