I remember a similar situation in December 1992 when GWB's father pardoned Abrams, McFarlane, Clarridge, Fiers, and George, all either convicted, indicted, and/or pled guilty for involvment in the Iran-Contra arms-for-hostages scandal. He also pardoned former Defense Secretary Caspar Weinberger just before the man went to trial. The pardons effectively stifled further inquiry into the persons or person really responsible for the scandal.
I think it's nice to hear the canary sing once in a while.