Not releasing the album prior to those shows would have been awful, and further highlighted all the worst points of the tour. You'd get confused because it's one guy singing all the parts, and if you don't know those parts you'll have a hard time following. Not to mention that one guy has always had issues with live enunciation, making trying to follow the music you're hearing for the first time harder. Add then that they spent a great deal on production but none of it really assisted in telling the story as it should have and you'd have a very tough experience. And yes, you'd have the book and know the story, but actually trying to follow it within the show, if you're hearing the music for the first time, would be extremely difficult.