I'd quibble about this. The party may be the lightning rod but it is the Cyrcists to blame for most things. The party upset the Cyricists, which probably means they did good deeds. They killed an assasin, which is probably another good thing. They protected the town from a ghost and, incidentally, from a band of cyricists. I'll point out the players may think that the ghost is responsible for the burning of the town if they don't investigate enough to realize it was people. Even then, it could have been roving bandits under the influence of the ghost.
if the party is smart they will contact the Lathanderites and the Harpers (or whoever is in charge in the Marches). Someone (not the party) defiled a temple of Lathander. Someone (not the party) animated a graveyard full of dead. Someone (not the party) turned an elder Paladin into an undead. Someone (not the party) burned a village to the ground. Oh, and there's a ghost, to boot!
This should be enough to get some serious firepower on the party's side. The fact that no one was hurt and only property was lost should keep them in the town's general good graces.