There’s one video that I watched on AMW this morning where it appears they filmed this with another camera as you can see it move to capture him at the top of the screen, plus it’s shaky and I doubt there was an earth tremor.
I was looking back at some of the earliest videos and saw something similar. It looks like they filmed the video off of a monitor.
http://www.cbsnews.com/stories/2011/01/06/eveningnews/main7220513.shtml