Cannibalism and Thomism

Does anyone know of any good Thomistic accounts of the cannibalism in the Andes?  See http://www.catholicnews.com/data/movies/08mv177.htm  I see that some bishops said that it was OK, but I haven't seen any sophisticated treatment of it.  I am wondering if some people consider cannibalism maybe as a side issue in some articles on sins against nature or intrinsically evil acts.

Is it Ok to eat meat from an already dead person to save Anne Frank?  This seems to me possibly different from lying or buggering a hen in order to save Anne Frank.

There is a lot on lying and Ann Frank.  For the moral issues involved with hen buggering, see (or even better, don't see)  http://www.utilitarian.net/singer/by/2001----.htm