Yes, Tim went into great detail in that interview about the family dynamics he observed during his first meeting with the Anthony's.
I believe Tim said that George's buddy stated something to the effect of "
The Truth is sitting right there in the bedroom and SHE'S NOT TALKING!!" 
This apparently was all said to Tim within the first 5 minutes or so of him arriving to the Anthony house for the first time. Tim said he found it to be very significant that one of George's close friends would make a remark like that to a near stranger in the midst of all of the drama.
I think George in his heart wants to do the right thing by Caylee. You can see by reading his earlier transcripts that he was speaking freely, and holding little or nothing back. But his wife has got his "
you know what" in her hand, and she squeezes hard every time he steps out of line.
Please excuse the visual image ^ folks.