Maybe he botched the renegotiating of it so it would not pass, and would have to be completely rewritten from scratch, because if passed as an amended pact perhaps JK would have been held liable/prosecutable. A long stretch but perhaps ….
The name Black Cube seems so well chosen for them to have named it–because it's (again) symbolic in many ways. One way that occurred to me lately has been "black box," or: something goes in and comes out different and no one knows the mechanism