Ummm....
Maybe a couple. These are purely speculation.
1.) He forgot over the years and meant 7?
2.) 7 was created first and 6 was inserted after?
3.) the order was changed after he left?
4.) 6 wasn't designated rank material until after he left?
I don't know!
I would even posit that 6 kata was created after he left, but since it's in the villari curriculm, I don't see how it could have skipped a generation. I can't comment that accurately yet, but I am hoping to get a closer look at 7 pinan and drawing a more solid conclusion. The only thing that I can say, is when I saw 7 pinan being performed, I immediately thought, "hey, that reminds me of swift tigers." It's not that far of a leap based on comparison to apply the transitive property to get Swift tigers =>circle of the panther=> 7 pinan. Having done Swift tigers and 6 kata for a while now, I don't find them very similar.
Yes, that's the story I got as well, and the fact that he does them seems to argue in favor. One doesn't see kata swimming 'upstream' that often. Although the Karazenpo site talks (or at least used to mention)about Rohai / Statue of the Crane. Any thoughts on that? In your talks with Sijo Gascon, has he identified specific curriculum items, e.g. "we added this, Pesare added that, etc."? I haven't yet had the chance to ask him these questions.
Matt