Only if he is willing to be excommunicated and condemn himself to hell.
By the way, how do you know what the priest advised the girl to do, or that her story is even true that she told him? Is the fundamental hatred of religion the guiding force in your life?
Being kicked out of the church is better than knowing a child is being abused and doing nothing to stop it.
Prove he did nothing to stop it. Fuck, prove he knew. You are letting your feelings dominate your small ability to make rational decisions.
He didn't report it. He listened and probably got off on it.