Check ISCO if you want to know what happens when Cox pulls out....and in that one he had a "good" reason to pull out. Plus he has been way over the top in his enthusiasm for NNVC compared to ISCO, so the result of a Cox dump would be way more dramatic than his pumps.
Don't think it will happen anytime soon, however. AND, I still think NNVC could decide to do the right thing and actually try going to the FDA.