"Could the judge be sued for murder? Civil charges?"
No. You cannot sue a public official for what he does in his public capacity. Impeachment is the only option, and no doubt a very long shot.
This judge is storing up for himself some very hot times in that eternal sulfery furnace to come.
(Denny Crane: "Sometimes you can only look for answers from God and failing that... and Fox News".)
I don't believe in hell. But there are certain people for whom I pray that there is such a place. And Greer is one of those people.
I like Dante's visualization that those in hell suffer their sins for all of eternity... So Greer would be on the verge of starving and dying of hunger and thirst for all of eternity.
Mark