Lost another time

Kris: "my friend's getting married, he's only 21!" Alan: "Is he religious? Religious people are always married by 21 so they can boink."
via AlanDistro's twitter

So I came up with an idea about why the island is underwater in the flashsideways timeline. I think that in the original timeline the bomb always exploded, which somehow stopped the pocket of electromagnetic energy from destroying everything. The original timeline is a closed timeline which doesn't change, what has happened always happened.

On the other hand I think that in the LAX timeline, flight 815 never crashed, the survivors never went back in time and never blew up jughead, therefore the incident was never stopped and somehow the island ended up underwater. The lack of interference from the time travellers would account for some of the differences in the new timeline. Due to the fact that he was not shot and taken to the Others, Ben could have been evacuated from the island before the incident. This also explains why Desmond was not on the island.

My theory is that the jughead bomb could have just blown a hole into the LAX timeline, somehow linking the two. This link could have allowed things to bleed through, like Juliet's mumbling about coffee, and Jack's confusion about his appendectomy.

I had a theory that Sawyer had become a cop rather than a con because Jacob had not touched his as a child (that sounds a little creepy) and therefore had no influence on his future. I checked the timeline on lostpedia and the incident occured the year after James' parents dies, so the encounter with Jacob most likely still happened.