Leadslead is right. If “the developer” is naturally smart, which they usually are, they will have a man in the PAC membership. Steps need to be taken to minimise the damage they can do. Do not assume confidentiality will be maintained. Our yacht club failed that way. You don’t know they were watching your every move until it’s all over and one of your ex members suddenly shows up as a new employee/mate/consultant/contractor for the opposition.
This is not to impugn the reputation of anyone at PAC, least of all the committee staff and membership. Just don’t be surprised if not everyone shares your enthusiasm for keeping the club where it is.