The charges were dropped. The headline is somewhat misleading. (I say “somewhat” because according to my limited knowledge of the law, at this point in the trial, if charges are dropped it’s considered the same as an acquittal, that is, he can’t be tried again on those same charges because double jeopardy has attached)
You may be correct, but my understanding is that unless the charges are dropped “with prejudice”, they can be refiled; it’s only if the trial grinds all the way to a formal conclusion with a formal verdict of “Not Guilty” that the double-jeopardy protections kick-in.
Generally, as I understand, even if it gets to the point of the trial concluding and going to the jury, if the jury “hangs” and the judge calls a Mistrial, then the prosecution has the option of trying again.