Back at THQ we published this. The story goes that there’s some language in the deals between Pixar and Apple that forced Disney to publish a Mac version of all Pixar-based games.
There was Mac hardware that was only used for testing Pixar games; the testers there are the ones that told me the story.
Also I remember now some tester made a Redman/Methodman music video with video clips from the first game and was of course fired.
Unsolicited oral history of the Incredibles games I guess.