According to one article:
Each petition accuses the four of “disruptions and actions that continue to subject the city to ridicule from the media and neighboring communities. They continue to waste valuable time squabbling and pursuing personal attacks rather than addressing the real challenges and concerns that face the city.”
The city apparently also has a law that the petitioners will have to pay for the costs of the recall. Now, we saw a "loser pays" law in Keyser, West Virginia (which seemed to have a very anti-democratic code), but this law seems a bit different. This may involve some digging, so stay tuned.