You know, EVS and CG in general sure are lucky that their attempts at defamation are hurting them as opposed to their intended target. If Eric had actually been affected by them business wise, he could sue them and they would be in a whole lot more than what they make to him. Alas, their incompetence make them safe.
Of course, this is not how the world works. You CAN actually be sued for harassment and emotional distress. So yeah, if Eric decides to go the lawsuit route, he could use that. He, his family, friends and employees have been harassed. As long as he has the proof, he can sue. I just hope that he does actually sue and his detractors start crying about the money problems. They do not have the cash or the fans to finance shit like that now.