It seems that maybe they are trying to "re-do" their reputations. IMO.
Too late for that. When you get up on the stand and LIE to help free the one responsible for your own granddaughter's murder, it ain't gonna happen. And to have it be made public on the very day that person is released from jail is a major slap in the face to anyone with an ounce of sense.
This will be seen as yet another crudely crafted attempt to stay in the spotlight and turn a buck for themselves. It never stops with these people.