After watching it several more times, this video might be my favorite. If you watch it on full screen it's a lot more impressive. Seeing the condensation that close is remarkable. It would appear that he was right on the edge of the condensation funnel. Maybe barely into it. You can actually see a suction vorticy wrap away from the cameraman and then rotate back behind the main vortex (or group of vorticies). Fascinating to say the least. More like mesmerizing really.
The video's a little shaky, but hell, it's pretty damn stable compared to how I probably would have been lol.