Joe,
It's also easy to see at least two authors in the creation story. I do, however, accept Ezra or an Ezra like person being the final editor of the Torah as we see it. We know that at one time what was called TORAH could be read aloud in one day. This was probably the core of Dueteronomy.
YERUSALYIM
"Vanity! It's my favorite sin!"
[Al Pacino as Satan, in "DEVIL'S ADVOCATE"]