How about something like this:

No Court Justice shall be prohibited from seeking and/or maintaining membership in any group or organization duly created under the codes and laws of The South Pacific, provided that said Justice adhere to certain regulations, to wit:

1. A Justice of the Court shall, at all times material hereto, remain objective in the administration of his or her duties and in the hearing of cases presented before the Court.

2. Should any party of a case currently before the Court be a group or organization of which the Justice is a member, the Justice shall be recused upon proper motion for recusal.

3. Motions for recusal may be proffered, sua sponte, by the Justice's own volition, upon a motion by another sitting Justice, or upon a motion by any party to the case at issue.


I imagine my suggestion isn't perfect, but could something like this function as a viable compromise?