Members of the Board, district committee members, Disciplinary Counsel, staff, and practice monitors shall be immune from civil suit for any conduct in the course of their official duties. Complainants and witnesses shall be immune from civil suit with respect to any communications to the Board, district committee members, Disciplinary Counsel or staff relating to attorney misconduct or disability or any testimony in the proceedings regarding the same, unless the information which the complainant or witness provides in such communication or such testimony is false and the complainant or witness had actual knowledge of the falsity. The immunity granted in this Section shall not be construed to limit any other form of immunity available to any covered person.