There is no way for Clinton not to lead Trump. He simply doesn't have the coalition to win. The republicans should seriously be looking for ways to wrest the nomination from his luxurious, classiest, big hands. Clinton is still standing but definitely battered against a more competent opponent. Knowing what we know today, Sanders probably could have put her away.
What we did learn today is that:
The FBI chose not to indict based on gross negligence alone, as there's only been one indictment under that provision in recent history. Comey made a compelling argument for that decision and embarrassed his detractors in the process.
The FBI failed to confirm or deny an investigation into the Clinton foundation, which probably means someone is at least examining it. That is more than just partisan background noise.
The State Department will most likely continue its investigation now that the FBI investigation is complete, which could result in a few Clinton surrogates losing their security clearances. Not exactly a great outcome.
Those scenarios are still political liabilities to Clinton and none of them are partisan in motivation or nature.
The witch hunts and vindictive actions we can expect is a childish move to revoke Clinton's access to security briefings prior to the election, and congress compelling the FBI to investigate Clinton lying under oath during the Benghazi hearings.
Sure seems like a lot of grievance to shield yoga appointments and cookie recipes.