It's pretty obvious for whatever reason that Hurley, Jack, and Kate time flashed to the past at the point where the rest of the gang was left at when Locke turned the wheel. Maybe the rest of the gang did too.
Everyone ends up crashing in current time where Locke has to train the new key members of this. The dude who talked to Jack and sat next to Hurley played the Sayid role if everything else must be like the first flight. I enjoy the idea that Frank was supposed to be the original pilot of flight 815 and now gets to pilot this one. I'm guessing the seats that Hurley bought makes end it up being the same number of passengers from flight 815.