Man, I almost missed the whole thing. I only visited the website to get the patch since I suddenly felt like playing the game again and noticed the mention of this.
I wish that Manny's brother segment had been in the final game. It would have brought even more depth to Manny's character and the dream-talk puzzle sounded like it would have been fun to solve. I guess the bit might have felt out of place in the actual game, but it doesn't stop me from desperately wanting to play it.