I came to the exact same conclusion! That video creeped me out from the first day I saw it, and I think it showed the dynamic between the three CMAs perfectly. (no video link atm, sorry)
At this point, I'm actually very worried about the trial. SA hasn't focused on motive at all, nor the emotional dynamics of the Anthony family. I know they're not required to show motive, but in a case with this many open questions, I believe it's a serious error not to. Without a clear understanding of motive, the jury may well have enough reasonable doubt to acquit.
If I were fresh to the case and sitting on that jury, seeing only what they are seeing, I might be willing to think a tragic accident happened that ICA covered up in a particularly horrible way. She's clearly a pathological liar, but that began long before Caylee disappeared and seems like her preferred method for dealing with troublesome things. Things that might well include an accidental drowning she was afraid to disclose to her family. The GA story would seem like more of her desperate lies to me, but the line that "your mother will never forgive you!" (paraphrased) would probably ring true. Not as something GA would say, but as something ICA actually said to
herself before beginning her cover-up and flight into fantasy. (Please remember I'm speaking as a hypothetical juror here, my
actual opinion is that's she's guilty of first degree murder.)
IMO, all the SA has proven beyond a reasonable doubt so far is that ICA is a pathological liar and that Caylee died in mid June and her body was improperly dealt with. That's just not enough for a murder conviction, unless the jury makes its decision on more than just the facts the State appears to be marshalling. I would be heartbroken, but not surprised at this point, to see an acquittal. I also wouldn't be surprised to see a mistrial due to jury deadlock or even an overturned conviction due to ineffective counsel.
Here's hoping I'm wrong, and we see justice for little Caylee soon!
EDIT: I found the video link:
http://www.wftv.com/video/17398425/index.html