Bring a Straight Arrow in previous cases does not make him one now. The issue herein lies with the simple fact that he is in close ties with the primary individual in which is the basis of this investigation... Former  FBI DIR James Comey & admitted close friend of Mueller.  Not withstanding also ties to the Clintons as well as former US AG Loretta Lynch.
With that being said, as dictated by Law, Mr. Mueller should in fact Recuse himself from any investigation involving the aforementioned individuals.
It's blatantly apparent this will be another stacked Democratic witch hunt, looking to discredit the Republicans & POTUS DONALD TRUMP....
RECUSE,  RECUSE, RECUSE.
Time would better spent investigating The Nobama administration & All parties connected to Hillary Rodham Clinton and the DMV Murders..