I found that video by chance many months ago and then didn't see it again!! I have to look for it!! Concerning the statue, what I guess is that there was a different script among the many options where the Joker might have replaced the monument in Gotham Square!! If you notice, it's in the very same position as the statue in the middle of the square!! Perhaps, during the celebration of Gotham's 200 Anniversary, Joker wanted to take over the city by replacing the statue with his own, but director and producers finally opted for a different evolution of the story!! It's my theory, and I think it's plausible!!