If these after the fact memos were written to document behavior that could be used to charge the POTUS with obstruction of justice then leaking them should be tantamount to disqualifying them as evidence!
And POTUS obstructing justice is another of their fictions. He is the boss of the FBI. They are not independent of the President.
He could have called Comey in and said “the investigation into Flynn is over, and I have pardoned him”. Dershowitz pointed this out the other day.
Likewise, he can direct an investigation to be started.
The FBI is a minor bureau and that’s it. They have zero independence. They are not some internal affairs of the USA and not some check and balance, or watchdog over the presidency. It is long past time they were reigned in.
If the president does something improper, the Congress and Senate can impeach him. Nobody else has authority to investigate him. Although I know we don’t really live under the old constitution anymore. We are in an authoritarian globalist leaning oligarchy that at best tries to pretend it follows the old constitution.