You start at the top. You move Jay Rasulo out of the company.
You then begin removing the puppets he installed globally ... after that you can slowly (and it will be a long, hard process) begin to change 'tudes.
But the change has to be set from the top on down.
Kind of like when you see wonderful, well-mannered, intelligent children, you KNOW they have good parents, you just know it ... want to see CMs smiling like they once did, genuinely happy working for Disney, being appreciated by management and guests? Simple. Hire quality people to oversee them.