Forgive me, I made a logical leap.
Catholic Encylopedia Vol XII page 262
"The Church is not susceptable to being reformed in her doctrines. The church is the work of an incarnate God. Like all of God's works, it is perfect. It is, thereore incapable of reform..."
I submit that it has reformed, numerous times; and continues to reform. For example, what would have happened 50 years ago if a Priest was found to be a homosexual? (To be clear, I'm not saying Pedophile, just that the man is gay) To say that he would be de-frocked is not beyond the realm of belief; it would have likely been manditory. Today, he is welcomed. Each of my points above is a change, or reformation. I further submit, that each reformation may, or may not be closer to the will of God; rather these changes are due to the will of man, in their entirety.
Please bear in mind that the Catholic Encyclopedia is in no way an official source or record for the Catholic Church. However, since you cite it's "incapable of reform" comment, it's of note that it also has an article, The Counter-Reformation.
It's a very long article, I'm not expecting you, or anyone, to read it; there are better sources on the times. I'm just citing it here in response.