It says the opposite in the memo firing him. It says he released "derogatory information" on Hillary after the FBI had decided it was a "declined criminal investigation" in violation of FBI rules. The letter said his speech on the matter to Congress and his release to the press was like a "closing argument without a trial". So he was fired because of the way he handled the release of information about Hillary and the derogatory comments he made about her after the FBI had declined criminal action.  You may remember his remarks about negligence and mishandling documents and so on-- these were the things he did wrong. So as some Republicans have said Trump fired Comey for his mistreatment of Hillary and this is like an apology and a peace gesture to her and the Democrats and putting all the email server stuff behind us. I do not believe that Trump ever do that for Hillary. I think  timing and the subpoenas issued by the grand jury today led him to try to influence the investigation.