Audio problem: When Den and Dart bully Flynn, their voices are swapped.
Continuity mistake: When Flynn sprays Edward, the water goes over Edward, but somehow his driver gets wet. And when Flynn sprays Gordon, the water is seen hitting the platform and Gordon's tender. Later, the water is seen hitting one of the coaches.
Factual error: In the U.K. narration, when Flynn sees Gordon, the narrator says "Flynn steamed in to a stop." but Flynn isn't steam powered. This mistake is fixed in the U.S. narration.
Answer: He was in the water.