A similar but far more dramatic situation occurred on board a United flight. A male passenger who was running late for his flight decided to call in a hoax bomb threat to delay his plane from Cincinnati to Dallas in October 2017.
So, delaying the ferry screwed up thousands of people. Those trying to go home and to their jobs from their holiday or vacation, those that got stuck on the "mainland" waiting to get to the island, and oh, btw, all the hotel rooms are already booked, and all those parking spaces are filled by cars whose owners are stuck on the island, you get the picture.