Sarge:
That method of analysis tells me George probably did smell the decomposition smell on June 24th when Casey opened the trunk. George also clearly remembered that Casey was adamant that she didn't want George to open the trunk. George pushed the matter -- very unusual for him to do that with Casey or she wouldn't be the liar she is today -- when he threatened to go get another set of keys. I wouldn't be surprised if George knew whether or not Casey was earning money in her contacts with men. LE seems to know which establishments and groups are into those things -- even retired LE.
I don't know... Seems to me that Cindy runs the show, so to speak, in the Anthony family, and that George winds up having to either put up with it or leave, which he may have tried to do back when filing papers for divorce...
so what's a person to do: leave his entire family or, as it appears he's tried to do, handle things the best he can?
remember: he did pull LE aside when they arrested Casey and told them he didn't think she was telling them everything...he did push the matter, as you note above, re: the trunk and Casey not wanting him looking in it... so while he's not pointing the finger at his daughter, he's not lyin gfor either