That is reasonable conjecture..... but could it also not be possible that AD has been brought in on the (as per Q) necessary deception? Perhaps he is adding his weight to paint Sessions in the way he needs to be painted for a little while longer?
Trump was not supposed to be revealed yet as not being out of danger from Mueller. So there is still some reason for the charade to continue?
Another facet may be that by adding AD’s weight to the calling out for Session’s hide, it prepares the ground for the day when Sessions can come out and be Sessions openly and FIRE THOSE PEOPLE’S A$$!
Just a thought.
Fire them, hell I want them arrested and jailed for treason.