Hi, I'm new here but have been following the thread from the start. I have several good friends who are/were close friends of Shannon's and heavily involved in the local (Wilmington) search.
I only knew of her peripherally, and I don't know Mott, but I do want to say that friends close to Shannon believe that Mott is a great person who has a history of giving people new starts. Including Shannon-and perhaps quite unfortunately-J.O.Bradley. I think Mott's words are being taken out of context a bit by saying he has no regret about hiring Bradley. The quote sounded more to me like he was saying he was not worried with the information he had even after he falsely was told J.O. Bradley killed his ex's bf (as opposed to the horrible truth). Also, in the news was the quote from Mott that when he was initially interviewed by the police and asked specifically about Bradley, he told police he didn't think Bradley did it/was involved. His biggest crime might be that he had too trusting a perception of people, but then again, if things are as they seem--it's not very often you have a psychopath on your hands and who would expect it?
So, I'm not ruling Mott out, but I don't think he is as strong a possibility, and I think his words might be misunderstood. Most importantly, he is not the one who was packing his stuff, changing his appearance, and had whatever evidence led police to say Bradley was obsessed with her.