ROTFL. It appears you are confused on two fronts. What he has recused himself from, and why.
Attorney General Sessions Statement on Recusal
Transcript: Jeff Sessions' June 13, 2017 testimony
Importantly I recuse myself not because of any asserted wrongdoing or any that I may have been involved in any wrongdoing in the campaign, but because a Department of Justice regulation. 28 cfr 45.2 I felt required it.That regulation states in effect that department employees should not participate in investigations of a campaign if they served as a campaign adviser. So the scope of my recusal however does not and cannot interfere with my ability to oversee the Department of Justice, including the FBI which has an $8 billion budget and 35,000 employees. I presented to the president my concerns and those of Deputy Attorney General Rod Rosenstein about the ongoing leadership issues at the FBI as stated in my letter recommending the removal of Mr. Comey along with the Deputy Attorney General's memorandum on that issue, which have been released by the White House. Those represent a clear statement of my views. I adopted Deputy Attorney General Rosenstein's points he made in his memorandum and made my recommendation. It is absurd, frankly, to suggest that a recusal from a single specific investigation would render the attorney general unable to manage the leadership of the various department of justice law enforcement components that conduct thousands of investigations.
a) Sessions relied on career Obama appointees in his decision to recuse himself, and
b) the wrong law was cited - 28CFR45.2 does not include the counterintelligence investigation which was neither a known crime nor an active criminal investigation against the Trump campaign.
Sessions would not be any more conflicted if he stayed in place than Rosenweasel who recommended Trump firing of Comey, then launched the Mueller persecution to investigate Trump's obstruction of justice by firing Comey.
Rosenweasel is now a supervisor and a witness in the phony concept of obstruction of justice for Trump exercising the ability to fire any FBI Director he wants.