Nope. If the jury walks the defendant, it's over. And that's as it should be, OJ notwithstanding.
It's double jeopardy, but there have been instances where people were convicted during a second trial.
That's the federal-state exception, where, supposedly, the federal government, being a separate sovereign, gets a separate go at the defendant. It's unjust and a misreading of the Constitution. However, in recent times, it's been limited to cases where the defendant was acting as an official agent of the inferior jurisdiction (e.g., a Los Angles pig turned loose by a local jury, despite having unjustly beaten the sh¡t out of an arrestee).
If George walks, I recommend he fly to Peru. That way, if Holder gets ideas, Peru will get to humiliate the United States of America. Which will be a Good Thing.
That is what he should have done right away after the incident. A blind man could see where this was going. He made the mistake of trusting the legal system.