Except Comey explicitly kept the conspiracy alive against all reason in June by saying “we won’t be pursuing charges, but…” and now he 100% jumped the gun. There is absolutely zero question if he spoke too soon, and even in speaking too soon he leaned in on the this may be a big deal half of the “may or may not be related” nature of the emails and purposely covered his own ass on an internal memo leaked to the press the same day.
I think he did it to try and please both sides of the aisle, and I think he will walk back on the announcement hard in the upcoming week. He wants to fan the flames and keep any wrongdoing from sticking to him.