I have a feeling both Cindy and George are going to stick by Casey all through a trial, claiming Caylee is still out there somewhere. I don't see them giving an inch, and probably where Casey learned to be such a hard *advertiser censored* (as her friends said). They will continue to enable her to the end, just as Scott Peterson's parents are doing.
This seems to be fairly common among parents of suspects. Don't forget Neil Entwistle's parents also claiming up until even after his conviction, that he didn't do it and that his wife commited suicide by shooting herself, through her baby, that was laying on top of her sleeping in bed.