Artist Banksy intended to shred the whole of his Love is in the Bin painting.
The auction at Sotheby's last week shocked and bemused the art world when a shredder concealed in the frame by the artist was activated, leaving two-thirds of the painting in ribbons.
The videos show the painting being sold for £860,000, the button being used to activate the shredder remotely and ends with a copy of the original shredding completely with the caption: "In rehearsals, it worked every time."
Alex Branczik, Sotheby's head of contemporary art in Europe, insisted during a recent interview that the auction house had not be pre-warned about the stunt.