I'd imagine so. You've seen it? I mostly saw it for Pacino, but some things were inaccurate too, like the mental hosipital part, and the wife.
I do think the guy had a point near the end. He did tell Keanu's character to take a break, to be with his wife, but he didn't.. and all this mess happened. And then blamed the devil for it, when he's the one who'd refused in the beginning.