I think there are plenty of roles for a non witness insider in an organization that consults, befriends, and betrays. Writers, college professors, health experts, scientists. Easily disposable. Anyone that can be used and cast aside with little collateral damage are fair game to them. All can and have been be misquoted, used and abused. Think Monica Applewhite individuals. The RC hearings aren't the first time they've used her. If it matters, she's Catholic, female, and had access to the ultra secret Flock book. It doesn't matter what religion is attached to a commodity that is inexpensive and intended to be used for a purpose and trashed.
What sort of role would "a non-Witness insider" play within the organization? There can't be too many roles within the organization like that.