I'm not sure the change of heart we need is entirely on one side. It may be difficult for us to accept, but our church is based on the core belief that certain designated men can transform a piece of bread into a god and feed it to us, can forgive or punish in the name of that god, and can help decide whether we get to spend eternal life with or without that god. We can capitalize some or all of those words if that makes us feel better, but the truth remains. 
When we give that much control to an institution, it's probably true that a change of heart has to include us and our taking a long hard look at our core beliefs. If we could admit that those core beliefs need updating, perhaps we might begin to take control of our church and responsibility for our faith development and the offenders wouldn't have a chance to prey on children from positions of privilege.