Injustice in North Carolina - as presented on "60 minutes"

[question everything]

The main point of the story was that a flawed science, called bullet lead analysis, was used by the FBI for 40 years in thousands of cases, and some of the people it helped put in jail may be innocent.

http://www.cbsnews.com/stories/2007/11/16/60minutes/main3512453.shtml

But where the injustice of North Carolina came, at the end, was a similar story that we've heard before. A murderer confessed to his attorney, yet the attorney was bound by an attorney-client privilege and had to keep quiet while an innocent man went to jail. Now, that his client is dead, he comes forward and..

"instead of being commended for coming forward to clear an innocent man, the judge threw out his testimony and reported Hughes to the North Carolina bar for violating attorney-client privilege, even though his client was dead."

and..

"The complaint against Staples Hughes for violating attorney-client privilege has been dismissed. But Lee Wayne Hunt remains in prison, after the North Carolina Supreme Court refused to hear his appeal."

What kind of a justice is there? An innocent man has to stay in jail because... I don't know, not all the ts were crossed, or something?