I'm making the point these, are witness statements..
Could you explain what is, wrong with the mccanns offering revised statements to the PJ...perfectly legal
Apply your logic to any other criminal case and perhaps you'll see the problem.
Incidentally it is without question that senior elements in the PJ suspected the parents were involved in the dissappearance of their daughter. IMO this makes them "suspects". That's not a dirty word.... it doesn't make them guilty of any crime. When you follow due legal process a suspect is presumed to be innocent unless proven guilty beyond all reasonable doubt (or whatever burden of proof the Portuguese courts require for a conviction).
Furthermore the BBC didn't seem to agree with your assertions:
http://news.bbc.co.uk/1/hi/uk/7400416.stm "A Portuguese judge overseeing the Madeleine McCann inquiry has extended judicial secrecy by a further three months, court officials have confirmed.
The files would otherwise have been open for consultation from Thursday by
those involved in the case, including Madeleine's parents, Kate and Gerry.They are formal suspects, as is Briton Robert Murat, but all deny involvement.
Madeleine, of Rothley, Leicestershire, disappeared from a holiday apartment in the Algarve on 3 May last year. "