If you watch the beginning of the video from the plow, it starts before the video above. The aircraft was barely moving, going at 5 KTS max (appropriate taxi speed), then it abruptly and sharpy turns about 60° to the left and accelerates straight towards the ramp. Not the type of spin and acceleration that I would associate with just losing traction at idle thrust. It looked and sounded like he gave it some thrust, and the thrust reversers aren't deployed. You can see that in the above video. Maybe he hit the TOGA switches by drooping his fingers over the thrust levers and it spun and launched him before he knew what was happening. Maybe he got too far to the right and just panic reacted by cranking the nosewheel to the left and goosing it. I'm sure the two in the cockpit know what happened. Can't wait for the investigation report on that one. BTW, the original video is not sped up. He was moving that fast.