A Mortuary worker could be behind the discovery of five separate feet on Canadian beaches in recent months.

Five human feet — all detached at the ankle and wearing trainers — have come ashore along a 60-mile stretch of the Georgia Strait, a long gulf between the mainland and the eastern side of Vancouver Island. A sixth foot washed ashore last week has now turned out to be a hoax — a decomposed animal paw placed in a trainer.

Police initially suspected the feet — four of which were all right feet — came from plane crash victims but that has now been discounted. An emerging theory is that they were thrown into the water by a mischievous mortuary worker who would have access to corpses.
http://www.sundaylife.co.uk/news/article3846917.ece

A somewhat pedestrian theory I feel.