They must have an idea that Trump is going to win, and they don’t want to be left holding the bag for hitlery.
Just a theory.
Exactly my first thought too. Comey might have woke up and thought to himself “omg Trump might actually win” and doesn’t want to share a cell with Queen Shrillery.
My guess is that “professional FBI agents” recommended the investigation be reopened when the new emails were found and Comey had no choice but to agree.
Most FBI agents are good decent people.