Eating a sentient creature (er, against their will) : evil. Ok.
So, Question: This universe has a clearly established afterlife and soul progression. Once that soul leaves its mortal husk, does that body still constitute a sentient creature, or just a sack of meat? Beliefs of the body and burial rights aside, under duress or in a life or death survival situation, would that still be acceptable to consume them?
Also, as I'm fuzzy on in-universe lore regarding burial rights, please tell me there's a people in Golarion that believe in something awesome and akin to a Tibetan sky funeral.