Not kidding at all. Once the airway is open then it has to be kept open. Certainly using a safety pin isn't a first choice. But, If Necessary, it is an accepted method.
It seems a waste for NJ to put those kind of restrictions on professionals. In most places I'm aware of an off-duty professional, paid or unpaid, has no more duty to render aid than any other citizen. But, if they do decide to provide medical treatment they are obligated to do whatever a reasonable and prudent person with similiar professional standing would do under those circumstances.