It is EXACTLY like the Lavabit case, in that the feds demanded the company backdoor their software for the NSA to access, while not notifying their users of the change. As with Lavabit, TC shut down operations rather than comply with bulk warrantless government surveillance while lying about the circumstances.
They had to be indirect in the way they disclosed their rationale, as Patriot Act-like procedures put a gag order on parties who get subpoenaed to comply (i.e., secret investigations, secret subpoenas, secret courts, secret charges, and if you disclose too much of your case to the public, you are in criminal violation of the law, and are subject to secret prosecution and incarceration).