I "today" believe since this fiasco with DC and the psychic, the zanny story will go out the window. I believe either CA, GA or Lee will go under the bus. I believe that was somewhat of a last ditch effort to pull together the zanny story for reasonable doubt. The names, the house, them moving back to PR, the close vicinity of the body.
I just can't decide yet which one. If we go with CA; we have the violence at the home with her choking KC. Her denial of the violence. Her obviously made up story about "kissing them goodnight" on the 15th, the competition between them, etc. She could then say she left that night and left Caylee there and she has no idea who did it.
If we go with LA, she may say he is Caylee's father (and if that does not prove out) that she always "thought" he was. When her and CA had the big brawl she went to LA's and left Caylee there with him and she never saw her again.
Her best bet is GA since by his own admission, he was the last one to see Caylee. She could say she left the night before because they told her to leave and not take Caylee or they would call the police. She started partying trying to get Caylee off her mind, but she did think Caylee was being well taken care of by her parents. He put her in the sandbox to hide her from CA, then moved her to the car. He had the key to her car, and put it there after she died but before he could get rid of the body, KC found her in the car. He then told KC if she told ANYTHING he would kill her, CA, and Lee. He even bought a gun to scare her with when she got out of jail. He told her to tell it was a kidnapping and they would never be able to prove it wasn't. He has a violent temper. He told her to keep her mouth shut totally and he would get her off. Since the police found a gun in his vehicle that might make some jurors believe it.
Another thing with GA - Since he has always been the scapegoat in the family, KC could possibly enlist CA & LA to tell stories of his violence to the family in the past and things they thought "suspicious" the day of Caylee's disappearance.