Revealing mistake: As Lady Tottington leaves Wallace's home, the ivy between the windows on the left suddenly changes a bit- a portion gets squashed flat (about 2 bricks down and to the left of the house address numbers) as the area gets a bit blurry. The modelers must have not noticed bumping it while working with the doll. (00:57:15)
Revealing mistake: At the start of the film there is a picture of the rooftops being lit by the moon. The shadows of the chimneys go from right to left but the moon is on the left - the shadows should point the other way.
Answer: The fall killed him, and the brain waves are seen leaving his body as he physically transforms back. Then, he's raised from the dead by the smell of cheese. (Yeah, I know, but it's a kid's movie, not a documentary.)
johnrosa