I don't think Adnan did it. The motive is too convenient, and it's weak. Asia will end up swearing under oath that he had an alibi, and I think he'll ultimately get off if all of these new motions are granted. The case the prosecution put together was extremely weak, but the jury seemed naive at best and criminally incompetent at worst.
I think someone instigated, and Jay helped. I think whoever did this ultimately got to Jay, and they got together and framed Adnan. Who that someone is, I have no idea, but I really don't believe Adnan did it.