The Big Problem of Brain Death: When is our judgment sound?

Lifenews report on 21 year old man slated to become an organ donor

This link reports the story of a 21 year old man who was reportedly brain dead.  He was not dead and now doctors say he will make a full recovery.

Among many people, lots of Catholics included, organ donation has become something "intrinsically good."  What I mean by this is akin to the notion of "intrinsic" evil.  If something is intrinsically evil, no intention, no matter how good, can justify the deliberately chosen evil action.  In the case of organ donation in this new age of the "intrinsically good," even risking killing the patient for organ harvesting is not a sufficient reason not to do it.  To some, questioning the practice (note, I said "practice") of declaring a person brain dead results in a severe reprimanding by the hard-line advocates of organ donation.

The Church's magisterium accepts the judgment, biologically speaking, that total, irreversible cessation of brain activity, including that of the brain stem, constitutes death.   However, the Magisterium has never held that just anytime a doctor says the potential donor is brain dead that such declaration itself constitutes sufficient authority for a moral judgment of death.  On the contrary, the Magisterium requires a rigorous application of the criteria for brain death in practice and a morally certain judgment that the patient is dead before organ harvesting in each individual case.