Moderation is beyond the scope of TalkBoard.
If a TalkBoard member is unable to participate for disciplinary reasons, he/she may be removed by a 2/3 majority vote by the TalkBoard or by the owner of the board. The next highest vote recipient in the most recent election would then serve out the term of the removed member. In the event that a member is unable to serve on a temporary basis, the TalkBoard, like most advisory boards, can function well enough temporarily with 8 members. There should be no temporary TalkBoard replacements.
The same is true if a member is unable to serve for personal reasons. If she/he does not step down voluntarily or ceases participation, the above process should also be applied.