I agree Sessions did the best thing he thought for himself at the time to stay away from Conflict ... any way you spin it ... this was almost pre ordained to happen
That's why seven days before leaving office Obama changed the order of succession at the DOJ, to stack the deck against Trump if Sessions recused himself. Obama removed Dana Boente, the US Attorney for the Eastern District of Virginia, from the line of succession, and instead put in the US Attorney of the District of Columbia in that spot, followed by the US Attorneys for the Northern District of Illinois and the Central District of California, all three of course being Obama appointments and unabashed liberals.
The US Attorney of the District of Columbia is Channing Phillips, who was first hired into the D.C. U.S. Attorney's Office in 1994 by none other than the esteemed right reverend Eric Holder. He is a former senior adviser to Attorney General Holder, and he stayed on to work under Obama's next AG Loretta Lynch before Obama appointed Phillips as D.C.'s U.S. attorney in 2015. That's the guy who would be in charge, at least temporarily, if Sessions recused himself while the country would be waiting for the Senate confirmations of the Deputy and Associate Attorneys General. And his acting Deputy and Associate would be the aformentioned attorneys from Chicago and Los Angeles.
The eleventh executive order signed by Trump on February 9, 2017, which was done quietly and without fanfare, explicitly reversed Obama's shenanigans and put things back the way they were.
So right before leaving office, among other things, Obama performed a little gerrymandering at the DOJ, changed the way that intelligence information can be shared among the various intelligence agencies and added an army of people who has access to classified information, making Obama a true blue, genuine POS.