User blog comment:Jkphantom9/RWBY Vol 3 Production Confirmed at PAX East/@comment-4010415-20150307000533/@comment-25555436-20150307045004

@Chishio: It's possible that Monty had only planned (or at least only wrote down) the concepts for the Volume, the characters's role in the volume, and other stuff, while what exactly was going to happen, he didn't have it planned completely yet, or did have it planned but then...stuff happened.

You guys, say what you want about Monty, but he's no god. He's human, and humans are not perfect. One can have the ideas, the concepts, but not how they shall be carried out 100%, at least not at first. It happens to many people. It's a possibility to have in mind.