Is it legal to sample human flesh in an anthropology cl?

I am asking because according to Wikipedia's article on American Idol, "the 2005 auditions featured a "cannibal" who had sampled human flesh in an anthropology cl." WHAT? Is that true? How is that possible? Surely it is not legal. And if it is illegal, then why didn't the guy get arrested? I'm confused. Does anyone know any more about this?