Wow. The one day I take off from reading through the threads, scouring SM, and clinging to media details, something breaks. Usually suspects don't have their lawyers releasing their entire defense before trial even begins. We can read between the lines though. By doing this, RAT has given us a glimpse at some of what LE has found. Circumstantial evidence at the Liberty, and hair recovered from his camper. I think he had worked on his story, assuming that he couldn't completely cover all DNA left; whether she left a finger print, hair, etc. He has flexibility to change the details, but keep the story.
He's experienced. He knows to play the public. He can make a bid for his freedom and statement for his innocence, explaining it away with his elaborate story. Get the public doubting. "Maybe LE is really harassing this guy. There is that 2010 case." He wants public favor and to push his story out immediately as if he has nothing to hide.
Unless he knows that they will find evidence of another person in the camper. This could be his way of spinning the story, and completely throwing them under the bus. However, I have a hard time believing anything he has to say.
