Keep in mind that's some really old footage. He's changed some over the years.
I think the hardest thing for people coming at Don's stuff from an Aikido background is that in order to really start to approach what he's doing, they have to realize that it IS different from what they were taught, no matter how similar it looks. Being able to accept that and let go of what they think they know is very difficult. Too often you hear, "Yeah, we do that too..." No, no you don't. (I don't mean that as a dig at you Boon, just a general comment.)
No problem, I do realize that aiki type of arts are feeling art. You have to be there, to feel it to know. It may look similar but may not be the same.