Or maybe that explains - no. Silly idea.
If the whole point of this is for the CIA to claim the moral high ground, or to mend fences with the Democratic establishment by blaming somebody else for the email thing [Why? Why now?], surely they should start by issuing one of those historic apologies for - let's see now - Castro's exploding cigars, toppling various dictators, wiretapping, more or less the whole of the unofficial history.
You're spies. There are Russian spies. Deal with it.