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Continuity mistake: In the abandoned railway station scene, when the heads on stakes appear, you can see in the first shot, Winston is wearing his hardhat after that there is a split-second shot and it disappears. In the very next shot it reappears. (00:59:51)
Chosen answer: After the initial high of saving the city from Gozer wore off, they were blamed for the danger in the first place and sued out of business. The restraining order was additional insult to injury.
Captain Defenestrator