Grime has had ample opportunity to correct public interpretation of his dogs' alerts following release of the excerpt in the Sun, taken from the extended video. He has chosen not to do so. In the circumstances, it's no wonder PJ cannot move beyond the parents & give serious consideration to CB having abducted a living Madeleine. IMO.
https://www.youtube.com/watch?v=8lrrMoUr3OA
Almost everyone else associated however vaguely with Madeleine's case has had their say on it. What I think he could have contributed mattered very much back in the day and could have made a real difference to the way the case was perceived by the general public.
I think Grime's silence in the face of the prevalent and obvious misinformation regarding the role of victim recovery dogs which has surrounded the visit to Praia da Luz from the word go is reprehensible and does him no favours.
If he is associated with the "dogs don't lie" mantra that is doubly so and verges on dishonourable in my opinion.
I think the issue could have been settled many years ago if the will had been there to settle it and I think it could have been sorted without mention of Praia da Luz ~ and he was the man who should have done that.
All that was required was to address the general issue of dogs exactly as he has done in his statements and in the world of academia. I find it extraordinary that he didn't do that.