Thank you for the welcome, Helene. I'm hopeful I'll find other Alberta Ballet viewers on this forum.
From what my very bad German allows me to understand, Yukichi Hattori went in search of new challenges, and since he and Galien Johnston are a couple, they wanted to go to a company that would take them both. Galien was born in Lethbridge, not too far from Calgary, so it's a sort of homecoming for her. If anyone comes across any additional information, I hope they'll share it here.
You're right, Alberta Ballet does have a high turnover rate. Several former members are now with Boston Ballet and Les Grands Ballets Canadiens de Montreal, but so many others have come and gone that it's hard to keep track. If it's true that Alberta Ballet now has 27 dancers, that means it's larger than the Royal Winnipeg Ballet for the first time. I'm glad Alberta's oil revenue has finally turned into something useful.