Here are the changes I made in the controversial section just now, so they are easier to review. 
  resulting from his board memberships at Goldman Sachs and Procter & Gamble (not relevant to McKinsey)
 "After the scandal McKinsey reviewed of its policies and procedures" -> "instituted new policies and procedures to discourage future indiscretions from consultants" (using the new New York Times source, which provides an extensive account of new policies and procedures at McKinsey in response to the scandal)
 There is no evidence of any damage to McKinsey's brand,
 (Talk)