sweet pix! I didnt quite understand the "The following shots were taken in sequence, on the same train, on the same ride. No tricks. See if you can spot what changes. *Last pic not in sequence*" thingy
He just means that that series of pics is like in order. They were taken on the same train on the same launch. And then he uploaded them in order, with the exception of the last one. That was out of order and wasn't taken on a train at all.
One thing that I noticed about the lights, is that when ever they're on your looking at them from the botom right, and whenever they're off your looking at them from the top left. I think that the "lights" are just only visible from one side, unless real can prove otherwise.