I was actually surprised to read that this restoration was unauthorized. Didn't 2 Entertain announce a few months ago that it was preparing Shada for DVD release? I head about Levine's project soon after and I assumed it was being done for 2 Entertain.
No, Levine's plan was always to present the completed animation to 2|Entertain as a fait accompli
-- "Take it or leave it." 2|Entertain had no interest in doing this on their own; it wouldn't have fit their budget.