Season 3 Finale Clues: Grand Avenue

The newspaper clipping in the Season 3 finale says that the man was found dead by the doorman in The Tower on Grand Avenue in downtown Los Angeles, which i read on blog.lostpedia.com that this is an unbuilt project. This Los Angeles Times Article says that that construction on the first phase of this project will not begin until October 2007 with the entire project completed by 2011. So when was this flash forward?

Here's my new theory, perhaps this flash forward was the end of the show, and everything we see for the next three years will be leading up to that moment with Jack at rock bottom trying desperately to return to the island and save those he left behind when he and Kate made a deal and got to go home.