Ah, I should have figured as much.
BTW, I got my demo disc in the mail today, and judging from the printed side of the disc (haven't popped it in the PS2 yet), they removed the VJ2 demo from the disc. I'm guessing that they didn't make all the discs at once, so they were able to send out future batches without the faulty demo.
Kinda sucks, though, as I really wanted to try the VJ2 demo...