I think they removed Wozza from the ending demo, so he/she wouldn't talk and end up screwing the game text... Same thing with the shark...
When you are in her cave she talks ramdomly at some times, so what if she talks at the same time as mumbo? And why they removed Wozza and didn't remove the jinjo? they could have removed him too, since banjo avoids picking the jinjo up, for no reason at all.
Also, I dunno if this is old, did you guys see this interview?
http://www.n-sider.com/articleview.php?articleid=401
Is this fake?