Well that was that, the party I DM was just wiped out by the Invisible Stalkers in the sodden hold. To their credit they did fight on to the bitter end and managed to take down one of the without see invisibility.
So I now have to shoehorn a new party in to the middle of the AOW campaign and I am planning to do it in the arena fights in the next adventure, and having the approached by Eligos after the event to fill in for the previous party.
Too bad really as they had a really interesting party going:
Male Dwarven Psychic warrior
Female human Monk (going sacred Fist)
Male human Fighter/Cleric of tempus (going warpriest)
Female human Ranger/Rogue/Scout