That's not exactly what happened.
Sessions and Rosenstein recommended firing Comey for very specific reasons. Comey was fired, and that should have been the end of it.
President Trump got on NBC a few days later and told Lester Holt that he wanted to fire Comey anyway -- regardless of what Sessions and Rosenstein said. He even said that the whole Russia story was a factor in that decision.
He put both Sessions and Rosenstein in a very compromised position, where there was an appearance that they were complicit in the firing of the FBI director under false pretenses.
Rosenstein had no choice but to appoint a special counsel at that point.
At the end of the day, there's no disputing that President Trump did all of this to himself.
The good news is that he probably doesn't give a damn. I suspect he's even enjoying himself while all this is going on. LOL.
Only if one cherry picks statements made in the Holt interview, as the press does. Conventional wisdom about that interview is 180 degrees out of rig with what was actually said in that interview.