enough to fuel pathetic bull**** speculation? yes
enough to provide any scrap of evidence of wrong doing? not so much. he tried to save her himself, went for help and returned, tried again and gave up knowing she was dead. Called her family, called his lawyer, called the authorities, then pled guilty to leaving the site of an accident.
to me that sounds like: he got in an accident, he tried to save her, got help and tried again, realized that he'd failed she had been under too long, called her family to break the bad news and apologize, called his lawyer to hell him what was going on and that he was going to do (plead guilty to the charges that were to be pressed), and then went to the cops and told them what happened.
No conspiracy here -
it was a car accident.
[edit]
You want to assume grandjurys never make mistakes, or cannot be swayed by outside factors.
grand juries are 24 people, it would take some major talent to stack a grand jury.
the simple fact of the matter is you have bull**** and you're just fueling this entire argument off blind hate