The film did not paint that picture at all, people who have read the story are putting that interpretation on there "because it matches the book closer."
No no no, it doesn't match the book at all. Nothing in the movie matches the book, its simply a Hollywood film that happens to have the same title as this awesome horror book. And the vamps in the book would have killed him, no doubt, maybe held off a little for some humiliation before the slaughter.
I'm glad I saw the movie though. I found out about this Bob Marley guy everyone is always talking about.