
Continuity mistake: Just as John starts running from the Doc's place, he approaches a pole on the street, and two people with an umbrella start to cross the road. The shot changes to in front of John, and the two people who were crossing the road have instantly disappeared. (00:14:10)

Continuity mistake: During the fight with Earnest, John hits him in the neck, and Earnest raises his hands up to his neck. When the camera changes, his hands are no longer up by his neck. (00:08:00)

Revealing mistake: After shooting Sofia's boss, they are making an escape through a hall with 4 firepits. Sofia orders the dog to attack, and it pounces on a baddie. The dog is chewing on the person's midsection, and you can see through his clothes the outline of the padded vest he is wearing to protect himself. (00:57:45)
Answer: Winston had broken the rules by allowing John to escape in the first place before trying to kill him. This effectively nullified the Continental's immunity while Winston was in charge do to himself breaking the rules. Therefor, John would not be breaking any further rules by killing him on the Continental grounds as it had been desanctified, and thus John would have been cleaning it to allow it become such once more and clearing his own name.
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