I think ICA made this up completely. It reeks of being her petty vengeance fantasy:
First, it includes the two people she hates the most and damned her the most - George with the Grand Jury and Kronk with finding Caylee's body. She wanted vengeance against these two for putting her where she is today. Why else include Kronk most of all here? He makes the story the most nonsensical, but Casey couldn't help herself, and she had to include him the story to get back at him. The same is with George - his Grand jury testimony put her in jail in the first place, and she has NEVER forgiven him for that. Again, she had to get back at him, and in her mind, she did with this story for the OS. It didn't matter to her that George loved Caylee and would try to save her, she just had to make him sound as bad as possible to get back at him. That lack of logic right there tells me this Casey made up the part with George for pure vengeance.
Second, there's a damning shot at Cindy by suggesting the death is really her fault for leaving the ladder down. That is pure ICA there. She wanted to stick the dagger deeper into her mom's heart. I bet she fantasized about this and how it would play out in court for a long time. I even suspect that if Cindy had not supported George, I imagine Casey would not have had the defense really go after that part about the ladder. I think that part was meant to get Cindy's cooperation by using guilt as a weapon - again, pure ICA. She's done it her whole life, so why not now with this OS?
Third, there is no responsibility on ICA whatsoever - we all know Casey doesn't take one iota of responsibility for ANYTHING, so again, pure ICA. She doesn't want less jail, she wants NO jail time and own't accept anything less. She actually expects this story to work and walk out of court a free woman. Only ICA would come up with this kind of story absolving her of everything. As usual, it's everyone else's fault but Casey's and this story is full of that!
Four, there are those nonsensical gaps between George and Kronk, and I believe that is ICA too. I think she thought the shock of George as a someone who would molest Casey from childhood and coverup a murder and Kronk being so money hungry he would hide a body and then pretend to find it to get a reward would make the jurors put aside logic and reason and believe the story - again, that is pure ICA. It's why her lies don't work after awhile - she insults people's intelligence too much, and they just can't take it anymore. She did the same with the jury with this story.
Fifth, she concentrated on herself as a victim more than including logic and reason to fill in the huge gaps between George and Kronk. She was caught up more in sullying their names and reputations and making herself a huge victim than anything else in this story, and just thought everyone would believe it and go along with it - that is pure ICA once again. She thinks if she makes them sound bad enough and her enough like a victim, the jury will just believe it and set her free. And she didn't worry about how horrible it makes what happened to Caylee sound - even worse than the prosecution's story in some ways - as long it made her the victim completely and George and Kronk the evil villains, it works for her. She is big on being a victim and it really shows with this story. It's look at ME as the victim, feel sorry for ME, set ME free. Totally ICA!
Sixth and finally, I believe she had to one up the prosecution and make her story more horrible and shocking. She figured the jury would get too bored with the prosecution and go along with the more licentious and shocking story. Again, that is pure ICA style. Sure, the prosecution was going to sound bad, but she made sure her story sounded much worse and would be more shocking to the jury. She doesn't realize that that won't translate to the jury BELIEVING that story over the logic and reason that the prosecution laid out. It's been the problem with her lies her whole life - she expects her fantastical and nonsensical lies to trump any logic and reason thrown back at her. It's part of how sociopaths are.
I think JB was stupid to go along with this. Any halfway decent lawyer would have told their client that this wasn't going to work in court and try to work with them to come up with a more believable story. Either that or Casey refused to let him go with anything else. But they are so similar and Baez is so inept and egotistical that I can see him liking this story and wanting to go along with it. Maybe he even knew it wouldn't work but as long as it hit at the reputation of two people that damaged this case the most to him - George with the Grand Jury and Kronk with finding the body - that was good enough for him. I think Baez got caught up more in mud slinging than facts here. I think he's getting more satisfaction at making everyone else look bad than actually winning this case. I wonder if he even cares about that. I mean, as long she gets LWOP, he can consider that a win, so why not do what he wants like a bully and just say bad things about people? He is so schoolyard it's ridiculous. But he likes to be this way and thinks it's actually going to work, that the person with the most insults is going to win, not the person with the most reason and logic. It's why he's one of the worst lawyers on the planet.
So you have ICA who made up the fantasy for her own victimhood, vengeance, and escaping responsibility, and Baez who went along and promoted it because he's petty and egotistical enough to do it. Those two have to be the worst combination in history, seriously!