In most respects I agree he is doing a good job. But in this case he has failed, both to carry out his duty and to act morally.
Let's see: First it was "the murderer is too fat to kill"; then it was "it's not fair to this murderer that the other convicted murderers received a lesser sentence"; then it was "the murderer had an ineffective defense" (which I suppose means it's a just reason to allow him to live, breathe and -- obviously -- eat, while his victim lost everything as a direct result of his complicity in the murder); and today it's "well, this murderer didn't actually pull the trigger, he just helped out a little". (Excuse No. 3 turns out to be the one the governor uses as justification to show mercy to the murderer after all this time.)
The governor's great moral failure is that by showing compassion to the evil he has been cruel to the innocent.
If the facts of the case are as described on this thread, I have to disagree with you. This man’s death sentence was handled so badly that a just society cannot countenance it.