How thickly can some minds function to the point of deceiving themselves?!
The reason Amaral was excused from Madeleine's case was political/diplomatic, nothing to do with breaches of the secrecy of justice. If there were leaks, and I believe there were, most certainly it weren't from him but from some undergraduate detective.,
Furthermore. an investigation "task-force" is not an army company where the soldiers are like machines obeying the commander's voice. An investigation group is a heterogeneous group with different skills and a certain degree of autonomy. The coordinator is what the title means; he/she manages the distribution of tasks according to the different skills of the team members and puts the results together. In the files, it's visible that almost all the documents were written by the team members and not Amaral. Yet, some people seem to believe that the coordinator was working alone.
One of the most damning reports for the McCann was the interim report, however I've never heard anyone protesting against it or the person that wrote it.
That's why I think that this obsession with Amaral is, if not deviously strategic, very pathological.