I don't know if anyone else caught this,
but last night my girlfriend and I watched this film for the first time, and I totally caught a 23 reference -- I think its after Rapunzel leaves the tower and her wicked step mum comes back and is searching everywhere for her. There is a top POV shot from above and the wardrobe handles shadow form a 23.
I wish I could screen shot it. Check it out if you have it on dvd or something. Its very subtle but it really stood out to me.