Without giving away stuff at the end, I'd like to say just some overriding perspective things about the book. To me, these things definitely demonstrate a Christian worldview with redemption.
1. The fact that both Crane and Diana were basically rescued from dumpsters (figuratively) as little children. Ozzie obviously is a gambler, but when it comes to the central issues of life, he acts as a Christian man. The outcasts of society eventually become "players". What these outcasts need is good guidance. Ozzie gives it.
2. The obvious picture created by Arky’s "phase change" idea combined with the climax of the book being Good Friday and Easter. Water (lake) and baptism. Death and resurrection.
3. The pursuit of a “fountain of youth” (Ponce De LEON) by inhabiting other people's bodies shows the utter corruption in futility of the search for eternal life down here through new age guru techniques.
What saith the rest of you?