It will be interesting to see how this plays out.  The Infallible Church is not constrained by mere secular ideas of propriety, so it would be entirely possible Cardinal Pell would retain his position.  Our Holy Father is not one to react merely because a cleric is accused of, or even convicted of, sexual abuse of a child.  Recognizing that secular authorities lack the moral authority and insight of the Church, the Pope will no doubt keep a light in the window for Cardinal Pell, should the Prince of the Church decide the climate in Australia is not healthy.