Yes... that is SOP in cases such as this. The Russian KGB was very good at such games. I outlined some basic procedures for defending against such penetrations. Intelligence is rarely crystal clear; that is why we use 'analysts'... and with defectors we use skilled interrogators.
Of course, with all the social changes of the past 20 years (Bradley Manning), I wonder how good our counter Intel is now.
DIA. You know what that is and I posted about it yesterday. I trust them and their judgement on this matter.
I think it is D5.