Will the feds retry Helio Castroneves?

As you all know by now, the jury acquitted Helio Castroneves and his co-defendants of all counts, save for one conspiracy count. Technically the government has the ability to retry Helio on that count. But will they?

In the past, this U.S. Attorney's office has retried defendants after hung juries -- for example, we are on the third Liberty City trial, and the office retried the Joe Cool case after it hung. But this is different because the jury acquitted Helio of every substantive count. I would be really surprised if the feds chose to retry this one count. The sense is that Helio won the trial and was vindicated, so a retrial would look petty and vindictive. Plus, there's no reason to believe that the next jury would have any more reason to find Helio guilty after the first jury rejected almost the entire case. What say you readers -- should the U.S. Attorney's office retry Helio on the one hung count?

(p.s. Rumpole, let me know if you want to double down on your last bet).