Florentino Perez moved quickly to investigate a referee who in fact harbored many suspicions. Munuera Montero was proven to have done deliberate actions to prevent Madrid from bringing 3 points at that time. No matter what, a referee must be able to be independent on the field. If the court can prove the accusations against Munuera Montero, then the sanction is that he is really banned from FIFA forever.
That is the consequence he must accept and making a mistake can cause his career to end in an undesirable way and maybe this is a strong warning to other coaches in leading matches. Various speculations in relation to Munuera Montero and even worse he is considered to have helped the opponent so that Real Madrid failed to get three points in the match.
The referee must indeed be independent when leading because the mistakes he makes can harm the team and that is why a firm attitude towards referees who make mistakes intentionally must be given strict sanctions so that they are not repeated in the future.