There probably is more to it. Correct me if I'm wrong (and I'm sure you will - :-)), but if a L.E. agent or member of the D.A.'s office has been shown to be corrupt in the management of a case (unlawful searches, prosecutorial misconduct, etc.), doesn't that automatically open up all cases the individual who has been found so guilty was connected with for judicial review? I've heard that is the case and that it is a major can of worms to open for the L.E. and Judiciary. No body wants ANYBODY on their L.E. team to be found with poopoo on their shoes, cause once you step in it, you can never get it off.
Yes, you are absolutely correct... read about Joyce Gilchrist, it will make you want to scream.....
I say, hmmmmmm, how many innocents are in prison now because of the "known" inabilities of the SBI labs? I'll bet there's a lawyer of two in N.C. re-looking at some DNA involved case files.