Enweil, Fronen, Bara'Khur, and Avalon did not attack any human realms during the invasion, get your facts straight.
And I wouldn't call fighting an invader during the whole invasion while another did not a "fine detail". Sint only ditched the daimons when they thought they found an invulnerable weapon, the Light, and their reactions after the undead stomp that followed clearly proved their act was not altruistic at all.
Well, BK at least did send an army after Creasur... I can't quite recall whether they actually ended up fighting Hetland or not, but the intent was definitely there.