The Sword in The Stone came out in 1963, Disney died in 1966, in Winter. Disney bought the rights in 1939, but production only began in 1960.
Mab and Disney must have had a falling out between 1939 and 1960, I wonder over what? The Cold War perhaps? Kemmler? That Disney Land comes out at her sisters seat in the Never Never? Disney Land opened in 1955. Hmm. If Disney’s health was already failing, a parting shot at Mab is quite clearly the safest shot to take, especially to curry favour with Titania, for the ongoing prosperity of Disney Corp.
Mira, did you check under the ice?