If the Pope was unrighteous, then there simply will be a reward lost at the bema seat for all eternity. Discipline might occur in this life prior to the first death so that we might return to Him.
We might seek justice, but in this world, the most just thing is for us to return to Him through faith in Christ, not by any other mechanism than what He provides.
Why should we expect God to correct injustice, when all He has to do is provide by His grace what He wills, while the past unrighteousness is simply cleansed and washed away?