I don't know if this has been mentioned yet, but it looks to me like John has four toes in his cast in the Jeremy Bentham episode. After he writes his suicide note and stands up using his crutches, it shows a frontal shot of his foot in the cast and if you look closely you can see he has four toes. If you look closer you can see his pinky toe at the end, therefore it's not being covered up by the cast. He appears to be missing a middle toe, although there is no space showing he's missing one. Whether this has any connection to the statue is beyond me.