I was previously on a sideline of this issue and while I'm no legal eagle, my understanding is that Panda3D, the game engine used to create POTCO, is open source, available to all. This was true even when POTCO was active. And it was buggy as heck, and full of memory leaks even then. Currently Panda3D is hosted by Carnegie Mellon University, for free use to anyone and everyone. Disney's stance, beginning with Toontown, was that as long as any effort to remake a closed Disney game was not-for-profit, they would not interfere. Since they no longer hold the game engine in-house, there is almost no chance that they will come after this game, even when the new movie is released. They really can't. The game engine, and all associated files, are out there, in the ether, for the world.
They chose to put their corporate video game eggs into the Disney Infinity basket, which also didn't pan out.
One might be tempted to observe that the mouse doesn't seem to understand the video game biz. One might also not wish to enrage said rodent with such talk.