If Trump were campaigning like Bernie Sanders, "I don't care about your damn emails", or half-assed like O'Malley, and not doing well by his own lack of efforts, I might consider some odd conspiracy, but where Trump is attacking Hillary and Bill like a PitBull, and has his family involved, it totally doesn't pass the sniff test.
Something like Bill Clinton boarding Loretta Lynch's plane, and either threatening or bribing her seems much more plausible.