I can't speak for the Springdalians, since I have seen only neutrality from them. It seems that all the cities and citizens involved are fools. The pathetic attempts at negotiating on all sides were short-lived and half-hearted. Each answer was filled with veiled and/or overt threats. The instigators on all sides have turned a bloodless take-over of a village into a full-scale invasion. Since everyone else seems to have approached or been approached by the citizens of Coriona, perhaps they are the ones I should be speaking to.
Allanon and Sulphur seem to be the bright spots in an Avalon overtaken by greed, anger, and the need to control.