DO coming forward after all that time is suspicious, no doubt about it and I do think he knows something more... But I believe the Police have got good reason to be focusing on the 4 main POI's. They keep saying the 'answer lies locally' and that is with good reason.
They need to keep up the pressure on the local community and the POIs because that is where the missing puzzle piece is. Sadly, because of the focus on Claudia's personal life there doesn't seem to be a hunger for the truth, the feeling that a real tragedy has happened. But that's what it is, regardless of who she had relationships with or chose how to live her life it was cut short and that is nothing short of tragic. And now we are sadly in the stage of a 'reactive' investigation.
I read on a discussion forum that someone who knew the POIs who had 'had a pop at her' were laughing about the whole thing. Those are not friends. They were opportunists, users and eventually killers who are hiding the truth. One of her friends in particular is very vocal about the effect the investigation has had on her life, but she never talks about her search for justice and truth...I know we can't expect people to react and behave as we would, but it's a very selfish approach in my opinion.
Everyone is entitled to their own theories, but I will be following where the evidence takes me and that is in the local community around people who say they cared for her.
I really hope we can find that missing puzzle piece and bring Claudia home to her family.