As I see it this move helps DC since they can now do whatever they want with Fables (make a movie, change characters, etc, etc.) without the author having any say as they also now own it 100% as the author says. At the same time they have enough lawyers to keep everyone else at bay for long enough that it won't matter.
According to the article, their contract still stands as it's legally binding, so DC specifically still needs to abide by it as it can't be unilaterally revoked. But the rest of the world doesn't, so there's loopholes if they do it not as DC but another entity.
And DC can create an LLC which is legally owned by DC but also not legally DC which can do whatever it wants. As I understand it that pretty standard for movies and how Hollywood accounting happens.
As I see it this move helps DC since they can now do whatever they want with Fables (make a movie, change characters, etc, etc.) without the author having any say as they also now own it 100% as the author says. At the same time they have enough lawyers to keep everyone else at bay for long enough that it won't matter.