Oh if I had to choose between being stuck on a desert island with Kagan or Craig I'd be very much inclined to go with Kagan.
OTOH, I could always pick Craig, murder him, then enjoy the peace and quiet. This would be a moral act if you take a reasonable synthesis of Kagan's and Craig's ideas.
Kagan believes being moral means not hurting people and not refusing to help them. Craig believes he is going to heaven when he dies, and he bloody well wants to get there. To him, his body is merely a disposable shell. In metaphysical terms, he believes he is ten feet tall and bulletproof, therefore he cannot really be harmed by acts of violence.
So, acting morally in this case would be to not hurt Craig (coz you can't, not really, anyway) and not refusing to help him get to heaven without wasting a shitload of time. Pure win.
Devious, treacherous, murderous, neanderthal, sub-human of the West.