One doctor perhaps (out of four employed by Team Sky), but for how many other riders? Circumstantial it may be, but the case against Wiggins and Brailsford is overwhelming now IMO so the question is who else will get dragged into it. If there are clean riders in the set up I'd expect them to start protecting their own reputations. Need to keep in mind though that the "one bad apple" story would also be mightily convenient for a lot of people.
It looks like the press are starting to get their teeth into this now. It'll be interesting to see if they look into the Doctor's previous job at Bolton Wanderers too - where he worked under Sam Allardyce - and was "responsible for all pharmaceutical and supplement provision to players" per his own CV (http://www.drrichardfreeman.com/wp-content/uploads/2016/04/CV2015.pdf).