Hi Jason, those who did the demo are from different groups within the JAA.
JAA is an umbrella organisation for different Tomiki Aikido groups in Japan (but also an International Section) which have all a different flavor. JAA has a standard syllabus, but each group can add their special "mark" on their aikido. During competitions you can notice the different approach to randori, but also kata.
Anyway I don't know the guy.
To see a different flavour : http://youtu.be/MxR-0DDhzik
The instructor belongs to the instructors department of JAA, but is not always following the standard syllabus.
Thanks Eddy, he was really the only one in the video that stood out to me. I found it interesting how different they all looked, but I think you've explained why. He clearly has a much better a grasp of things than anyone else in that video. He has good linear body structure and usage, keeps his weight down, keeps his shoulders connected without tensing them up and maintains all that while moving. None of the other guys even come close to that. I wonder if that's common in his dojo or unique to him.