Perhaps, but the content of those memos was how Comey relayed the supposed events to his colleagues, right? Isn’t that what Comey said? He wrote the memos (supposedly) right after the meeting and shared that with friends.
Thus the memo contents are what the people in the May 11 piece were divulging.
Could that be it?
It could be, but that would not contradict his testimony that he first had the memo leaked to the Times on the 15th.