I knew a guy who lost his TS clearance back in the cold war days, apparently for the problem mentioned in section (b)(2) and maybe (b)(3) in your post. My belief is that he got trapped in a honeypot.
Probably not for the "Outside Activities" criterion. Was probably for the "Foreign Influence" or "Sexual Behavior" criteria:
9 posted on 08/16/2018 3:07:07 AM PDT by markomalley
(Nothing emboldens the wicked so greatly as the lack of courage on the part of the good -- Leo XIII)