Casey / Caylee Anthony case.. We have theory, what do you think?

Do you think it's possible Lee Anthony is Cayless dad and uncle? He's probably not but....For one he didn't want to submit dna. 2nd Cindy said no one will ever know who Caylees dad is. 3rd no one has come forward saying they could be her dad..4th, Lee said he and his sister had a "close' relationship and they could tell eachother stuff they wouldn't tell anyone else. What are your thoughts on this and the case in general.