I am inclined to agree, with one caveat. We don't know what Sessions is doing behind the scenes, maybe he is doing his job and nobody knows it because he's not leaking. Yeah it'd a long shot I know.
That said, Sessions' recusal is hindering (I suspect) his leadership of the DOJ and giving Rosenstein more responsibility than he is ready for.
He needs to make a decision.
Sessions needs to weigh his desire for the rule of law with his desire for justice.
He's following the law to the letter but justice is suffering.