And I know, it does sound rather unsettling. Even so, the Weinsteins may only have certain rights to the film. If Disney had relinquished ALL rights to the Weinsteins, Don Hahn would have said so at Comic Con, and would have said that a Disney restoration was thus impossible, rather than saying it was a "someday" project...
It'd be a shame to see an official restoration tied up in legal wranglings, what with Disney holding the film materials and the Weinsteins holding (some kind of) ownership rights.