They did not fabricate research or get caught burying their involvement in fabrication. That's not what your link says.
They are alleged to have funded research which one of their expert witnesses relied on. They may have other expert witnesses and their expert witness may rely on other research. And their funding of such research can also be above-board, after all it is not completely and totally different from paying an expert witness for his/her testimony. He may have many sources of funding apart from them as well.
Also all this behavior is alleged. It has not been proven and the judge hasn't ruled on this motion from OAI et. al. The judge may deny the motion still, making the accusations inconsequential