Unfortunately, it won't be.
This entire Clinton dossier bounce back effort this week has been a coordinated preemptive strike by right-wingers to convince his brain-dead cult members that firing Mueller is necessary. Oh, and pardoning whomever gets indicted tomorrow.
This all culminated in a Wall Street Journal editorial posting that Mueller must resign.
It's all the justification Republicans in Congress will need to say "very confusing, too soon to act, both sides... now back to tax cuts" after Trump causes a Constitutional crisis.
Mueller won't be able to save us.
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Unfortunately, those aren't the times we live in. The Republicans will give him cover, and this will go no where.
Their behavior to this point shows that Republicans will ignore any wrongdoing as long as their base continues to back Trump, and the propaganda networks are taking care of that quite nicely.