I strongly oppose patent trolls, but retroactively breaking valid contracts and nullifying sales of patents because you don't like who the patent was sold to is a truly horrible idea. If you don't want patent trolls to have university patents, don't sell them to them. And fire everyone at the university involved if they do sell them. Letting the university enter into a contract and then back out with no consequence because the purchaser is engaged in a vile but legal practice does damage to our legal system that far outweighs any possible benefit. This is just a bad idea generally. The EFF should spend their time trying to get patent trolling itself banned, not damaging the sanctity of contracts generally with cheap stunts because they like some of the short term outcomes.