Yes, I am suggesting that Sessions behavior can be explained by one of two simple scenarios. Either he is part of the DS and was used by the darker figures in the coup or Sessions is a timid imbecile who was in over his head dealing with the coup plotters. I give him the benefit of the doubt and assume he was foolish enough to believe the DOJ lawyers who told him (incorrectly) that he must recuse himself. After the recusal he became an albatross around the neck of justice.
Had Barr been appointed rather than Sessions none of the Mueller witch hunt would have occurred. The coup plotters would be facing what they are facing now two years ago.
If all of this was part of a Sessions master plan that Trump knew nothing of were Mike Rogers and Devin Nunes in on it? Without those two this Sessions plan would have failed and Trump would have been gone.
Ok, he may be both but your argument better supports the first possibility. If he was in over his head, he didn't have a master plan and if asked he would have tendered his resignation or taken some other action that satisfied Trump.
As it is, it seems somewhat likely Trump has been satisfied with waiting for the optimal political moment, while trusted assets have been gathering evidence and credible witnesses are recruited.