Goya's Constable

Here's another of those recently discovered Goya sketches: The Constable Lampinos Stitched Inside a Dead Horse. His head protrudes from the anus of the beast; a pile of entrails lies nearby; and the village dogs are ready to tuck in. This must count as a cruel and unusual punishment, but is it a form of execution or a very nasty form of temporary imprisonment, like the stocks used in Merry Olde England? Click the title link to see all three sketches.