Loved the ending. Great cliffhanger moment, for sure. I think the fact that Naomi pronounced flight 815 as having been found with no survivors confirms the large conspiracy surrounding the crash. Yes, it would take someone with great power, money, influence. I still think Widmore is up to his eyeballs in this deal and actively working with someone (Jacob?) to set up certain events. Now a days it would be quite easy to fake this accident. You wouldn't even need to use a real plane crash site if you had the proper contacts. We have the technology now to create a completely realistic crash scene with computer graphics. You only need to create a graphically realistic "recovery movie" and then release it to the media. It would be accepted as a reality....why would anyone question it?