The question is not "is there any evidence that will convince them", but "is there any evidence they would accept". The answer, of course, is no, because their goal isn't to be convinced or accept any kind of evidence at all. Their goal is more surveillance, terrorism or no terrorism, at any cost. Terrorism is just the simplest excuse for them to try to get more and more surveillance, no matter what.
Did he post on the police facebook page and they went out and arrested him, or did he post on the city/town (village? wtf is that?) facebook page and then the little snowflake town councilmen/commissioners/mayor file charges and order the police to go arrest him? If the local prosecutor files charges and issues an arrest warrent, the police don't have much say in the matter.
One other reason they can't, or won't, admit that it's true, is that would then give it more public attention and "advertise" the fact, which would then gain even more cord cutters. In other words, it might snowball. And they know it.
These Prenda court cases and their results have become too common place, pretty blase. Now, it takes a lot more to generate the same amount of excitement. I'm waiting for asset seizure or forfeiture or whatever it's called, to satisfy these judgements. Next above that will be any of the multiple Bar associations cases and disbarments. Then the best parts of all will be criminal cases by the DOJ and IRS. How many years till we get to see it all?
Can't the attorney request permission from the court to send subpoenas to try to ID the owners? Subpoena the registrar of the domain name, the website hosting company, the mail forwarding service if that's all their listed address is, the phone company for the listed 1-800 number, Paypal, and credit card companies and/or banks that forward the payments.
Shuler's worst enemy in this case is....Shuler. Anybody who represents themself has a fool for a client and an idiot for an attorney, even if they are an attorney to begin with, which Shuler clearly isn't. He seems to go out of his way to prove how big of an idiot he is, with the things he tries to do legally and in court. And out of court, too. He needs a real attorney who will kick him in the ass hard enough to make him listen, and he could get him out of this mess. But he won't listen to anyone, so he won't even try to hire an attorney, so he just keeps digging himself deeper. He won't help himself just out of spite. Yeah, the judge is wrong, but Shuler can't fight it without a real attorney and he won't hire one.