Been thinking a lot lately we're repeating the 60's. The 60's weren't good for much of anything...except the Beatles and the Beach Boys. :-)
"Let it go." may or may not have been a demand that Trump issued. If it wasn't a demand, it would probably not qualify as the grounds for an obstruction charge, and therefore Comey wouldn't be required to notify someone in the justice department. If Comey's memo regarding the event is truthful, then what Trump did: asking that the room be cleared (remember that he had to ask Sessions twice)and even discussing the case with Comey was inappropriate. Trump failed to regard Comey's past. Comey as well as many other lawyers has a history of memorializing events and discussions by recording what went on and what was said. The courts have ruled that the memorializations can be used as supporting evidence in cases and hearings. In fact one of Comey's previous memos was ruled just so in a previous case during the Bush administration. Trump should have done his research. Comey under oath has stated that there had been no attempt to interefere in the FBI's investigation, so it is apparent that he didn't regard his memo as evidence of interference, just as a statement of the behvaiors evidenced in that room at that time. Smart move on his part. He wrote and disseminated his account to others, thereby creating a record of the event. The reporter who wrote the article didn't credit Comey with releasing it, so we don't know who did. The reporting does give Trump a chance to release the "tapes" (his quote marks)that he tweeted about in his "presidential" (my quote marks)taunt directed at Comey. Maybe President Trump should keep his eye on the ball.
Spellbound: As you state, Comey in May stated under oath that "There had been no attempt to interfere in the FBI investigation making his memo meaningless. Yet the Democrats who knew full well of Comey's May denial of any interfere, used the Memo to smear the President. Finally, Comey knowns who he gave the Memo to, and why he gave it. We should find out when he testifies next week.