As far as I know Ezra sensei didn't actually meet Yamaguchi sensei many times, but apparently meeting him was a big influence nevertheless and made him change the direction of his training.
Is there any connection to Seidokan from Yamaguchi?
Mr Ezra was an uke of Yamaguchi Sensei in the early 70s.You seem to be contradicting this in your statements. I offer another explanation Mr Ezra also trained under Sekiya Sensei .Perhaps as in my own case Mr Ezra was influenced by Sekiya Sensei? We both met Sekiya Sensei /Yamaguchi Sensei when we were in the A.G.B [the precursor of the B.A.F \U.K.A and the B.B].many years ago. Cheers, Joe