I am not an expert but I think that even trading on a leak is not unlawful as long as that leaked information was indeed made public (e.g. someone leaks to the media and the media then publish it), although it may have been unlawful to leak the information. The point is that insider trading is not allowed. It is no insider trading if the information is available to everyone.
I agree. They didn’t intend to publish it, but they did publish it. They might not have advertised its presence yet, but it was freely available to anyone who asked.