The new comic is up: http://www.giantitp.com/comics/oots0908.html.
(since he can no longer spontaneously cure)
That is rather a minor issue comparing to him level draining when he heals (touches) them.
I don't think you switch gods just because you become undead... A simple Google search of "Thor's alignment" turned up a giantitp.com thread on OotS as the very first thread for me. Rich might be ignoring alignment restrictions, because Durkon was probably LG and Thor CG before.