Just to clarify something. The ECHR does not charge a fee unlike all courts in the UK. Secondly, I'm quite sure the McCanns have access to all the legal advice they would ever want in order to launch an application to the ECHR. That would appear to mean that they have given up rather than have been forced to do so financially. The ruling by the Portuguese Supreme Court in favour of Amaral and the comments re their innocence must have been a crushing blow after ten years..
I think that whatever is going on as far as the McCanns are concerned is with only one objective in mind and is, as Misty has succinctly pointed out, what is happening in Portugal with Madeleine's case.
They are being kept in the loop by the Policia Judiciaria and Scotland Yard and know exactly where the investigation is at the moment ... why should they jeopardise anything in connection with that particularly Madeleine.
In my opinion, Amaral is pretty low in their list of priorities. It will all come out in the wash.