There's been a religious component to the current war ever since Morek decided to join the party. Let them declare a religious war, the more the merrier!
Absurd. Morek's ruler offered to let the cultists in and to build their temples in her duchy.
SA is nothing but a big fluffy bunny. Nobody even mentionned the Cult before you guys started attacking SA temples just now, and the war's been going on for quite a while. What annoys the characters most is not the sacrilege of descecrating holy sites, but really the vandalism of undoing costly infrastructure.