Clericalism: can the tumor be excised?

Robert Mickens, a journalist for the UK Catholic rag The Tablet, gave a speech (click here to hear it on YouTube) on the coming implosion of the Curia and the implications for the Church. He is part of a growing body of criticism of the medieval structure, expressed today as clericalism, that lies at the root of problems presenting themselves as child abuse, bank scandals, etc. 

The problem with clericalism is that, like a tumor, it is difficult to excise without destorying its neighbors. There are many priests and religious, bishops and Cardinals, that work hard to serve the people of God. That does not change clericalism’s cancerous effects, and nowhere is this seen clearer than in the viscious, destructive and just plain evil machinations of the Curia. 

This is currently expressed in the undeclared war between Cardinals Angelo Sodano and Tarcisio Bertone