"Despite his admission of wrongdoing, he retained the honorific of most reverend and held the title of bishop emeritus."

In the Catholic brand of the Christian Superstition being made a priest and elevated to other higher ranks in the hierarchy conveys some sort of supernatural contagion, so trying to hold one of the supernaturally enhanced former plain human beings accountable would be similar to trying to bring their top level imaginary supernatural buddy before a human body to judge his guilt or innocence.