Continuity mistake: Just before Flynn cuts off Rapunzel's hair, there is a shot from behind him and he reaches up with his right hand to push her hair behind her ear. His arm is visible up to his forearm and the shackle is nowhere in sight. However, in the next, wide shot, the shackle is suddenly up around his wrist. (01:01:20)
Trivia: Pinocchio is sitting in the rafters above Flynn Ryder during the "I've Got a Dream" scene.
Answer: Maximus has a very expressive face, and is adept at some hand (hoof?) gestures. When he showed up he must have had such an insistent and desperate expression that they agreed to help. Perhaps the mime thug helped them to decode Maximus' pantomimed communications.
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