Even if Pigster could afford an attorney he would lose the defamation suit. Let's remember a few things. He could not afford his first suit against the Pests so he had to get funding from the SFWA. He actively sabotaged his own case against them. He admitted that he ignored his lawyer's advice and still engaged with the Pests. He refused to drop Quasi as one of the John Does, thus ensuring that the subpoena would be quashed. Certainly there are other stupid things he did to destroy his case that we don't know about. He would do the same things again. He doesn't learn.
Legal Kiwis, is this accurate? Defamation, slander and libel: must be false, must know it is false (there are qualifications here) must be made maliciously (ie. intended to harm) and must actually cause harm. Patso would have a tough time establishing that Lesley acted with malice, an impossible time really. As to causing harm? Naw. He would have to trot out his book sales to show that her statement hurt sales. He would have to show a loss of followers on his precious twitter. (which is damage according to Patso's pea-brain). Nope, didn't happen. He could not prove harm to his reputation.
Is there even a lawyer desperate enough to take him on as a client? The current lawyer is Nikki's, from her bankruptcy.
Pat's threats are, as always, bluster and bravado, made by an idiot, full of sound and fury, signifying nothing. Never forget that Patso actively seeks out the rakes to step on. He is well and truly controlled by the Imp of the Perverse.