There's a time and place to say that kind of thing and I don't think it's in the special message from the creator that comes with the DVD. How sad it must have felt for the animators to include that kind of "NOTHING TO DO WITH ME" message with the movie they made.

Don't get me wrong, I understand the sentiment you're talking about - maybe he did feel a little used, maybe he did feel like he doesn't want his name on something he genuinely doesn't feel apart of, and I wouldn't either, but to say it on the letter that goes out with EVERY DVD is just so excessive. As hilarious as I find certain implications of what the statement means, I can't shake the feeling that it's not very classy.