I haven’t seen the documentary, and am not informed about Bush “pardoning” the Pope (though it seems somewhat odd to me that somebody could be “pardoned” from prosecution, or that the US could prosecute the Pope, the head of a different country or that the US president could somehow order courts who can and who cannot be called in).
I just wanted to say two things.
First, this has nothing to do with the infallibility of the Pope (this is a very common misunderstanding). Even if the Pope himself was the most wicked man on earth, he would still be infallible.
It is not Pope as the person, who’s infallible, but rather Pope as the Office (if I may say so). It’s somewhat similar to the police. Just because we have some corrupt cops (even if the chief of police was corrupt), the police as an institution doesn’t lose its authority - they can still pull us over for driving too fast, or arresting us for burglaries.
Second, if you contemplate leaving the Church because of the awful things some of its clergy has done, you might as well leave Christianity (since every somewhat major denomination have had their own child abuses) or any religion, for that matter. In fact, you might as well move to an uninhabited island away from the police, doctors, teachers, etc (who have their child abuse cases), and especially families, since fathers are known to be the worst child abusers of all.
This is no excuse whatsoever of the sin and horrific harm some priests (and even some bishops) have caused, but the sad truth is that we live in a very morally corrupt society, and this corruption has spilled in the Church as well (which in a broader sense can be seen even since St. Paul’s times).