Why this is such a difficult concept to understand I'll never know. The Church was told back in the '80s that the sex scandal was going to explode, and that the only way to handle it was to come clean about it all. Did it? No.
Covderup upon coverup just breeds more lies...and when those lies are compounded over decades, if not longer, then after awhile the whole house of cards collapses. We may be seeing that here.
But I think there's a lot more at work here than just the sex scandal.