Wallace & Gromit: The Curse of the Were-Rabbit (2005)

Continuity mistake: At the start, a plate of cheese comes out from underneath a painting, which Wallace follows, causing him to hit the wall. In that shot, Wallace's bed is very close to the wall, and on the other side there is a white chart displaying different kinds of cheeses. But a few seconds later, as the bed in sent backwards, it's much further away from the wall. Also, the painting is much higher up than before, a machine has appeared underneath it, and the white chart has disappeared.

[Quartermaine's hairpiece has been sucked up in the bunvac.]
Lord Victor Quartermaine: I want...toupee, please.
Wallace: Oh, grand. We take cheques or cash.
Lord Victor Quartermaine: Toupee, you idiot. My hair is in your machine.
Wallace: Oh, no, it's only rabbits in there. The hare I think you'll find is a much larger mammal.

Trivia: In the scene where Wallace fetches the giant rabbit after it has come off the van, Gromit turns on the radio, and we hear a song called "Bright Eyes" from the film 'Watership Down' a film about rabbits.

Question: How was Wallace freed from being the Were-Rabbit?