I have a terrible feeling about what George "knew". Seriously think he did not "factually" know what happened to Caylee, but that he had a terrible hunch, (given his LE experience) that he went into a total paralysis regarding what he should do. I seriously can't imagine anyone "crossing" Cindy Anthony after seeing some of her expressions during the trial.
If the women in his family say the sky is Pink, what would actually be the point of arguing with them? Mother and Daughter Cindy/Casey make up "reality" as they go along, probably constant power plays against each other, while still seeming thick as theives to the rest of family.Cindy deliberately lied for Casey, and going forward in this family Cindy will no doubt attempt to use that as leverage over Casey for years to come.
I think GA simply got thrown under the bus with everyone else. I do fault him for what he should have known, and should have done about it. This doesn't absolve him of reponsibility, but I don't think he was a witness to anything.
If anything (and this is hideous to think about) the women of the family treat the men of the Anthony family as utterly inconsequential, that's pretty obvious after the trial.
I don't think even Casey would have confided in George, because she knows her mother would eventually wear GA down, and get anything Casey said, out of him.
I believe (IMO) George just added up what had to have happened, eventually, even though I'm sure he went through phases of denial first.
When something finally became utterly too obvious, the denial lifted, and that's when he first considered suicide: he had to have thought: "My daughter killed my Grandchild, and my Daughter and Wife have closed ranks. I let this happen..." He felt isolated, completely, left suddenly with this horrible knowledge that galled him.
It looks like a guilty conscience to the outside world, but its most likely gaping remorse that any of this went this far, and he did nothing to stop it.
Sorry for the rambling, but the passive aggressive misandry in that family is undeniable.
As always, JMO.