They had the exchange with a minor from an account that everyone -- including the defense -- believed to be Klayme's. His only counterargument was that his email had been hacked, which was not true and not the correct explanation.

But what they didn't have is any independent evidence that Klayme had sent the messages or even that he had access to the account that sent them. If they had looked at the IP address from which the messages were sent, they would have seen that it wasn't his and was in a distant geographic location.