He's threatening Ken Silva now and you can read the details here at Apprising Ministries (that is, if the site doesn't get shut down from Richard's whining campaign).
Richard, one would think the same case could be made about you and your books against Mormons and other religions and cults that you consider false, couldn't they? Be careful of the precedent you are setting. In trying to silence your opponents you are going to be slitting your own throat. You have defamed the discernment ministries FAR MORE than any case you can try to make against them.
Bob DeWaay could even make a case against you for your posts insinuating that he had SO MUCH in common with Rick Warren and the things that you said that gave the impression he was coming to agree with Rick Warren.
Also, one has to wonder, if you're getting this desperate, we know that this rather grassroots effort against your most favored false teacher Rick Warren is working. Rick Warren must be losing share and we all know (from listening to his focus on numbers over the years) that he doesn't like when numbers go down. After all, he himself says that means God isn't blessing the operation if it isn't growing. (See Purpose Driven Church).