No way... 23 years of non-coma??

I just saw on Yahoo! News that a Belgian man who was thought to have been in a coma wasn't really. The catch? He was in that supposed coma for 23 years!! (From the U.K.'s The Guardian.)

Then a neurologist rediagnosed him... and figured out that he knew everything that was going on around him, just was severely paralyzed. So they gave him 3 years of intense therapy, and now he can use a finger and a touchpad to communicate.

Experts say Laureys' findings are likely to reopen the debate over when the decision should be made to terminate the lives of those in comas who appear to be unconscious but may have almost fully-functioning brains.

Now, I'm opposed to "pulling the plug" on a patient in a coma (or severely paralyzed, or what have you) on principle--but this just makes one ponder what could happen should a patient in a coma... not be in a coma... and have the life support stopped.