After retiring from the active episcopacy, Bishop Clark served as Executive Director of the Committee on Episcopal Initiatives for Ministry and Mission of the U.M. Council of Bishops. As such he gave leadership in the development of the Council’s initiative on "“Vital Congregations-Faithful Disciples.”" He also served as an adjunct faculty member of the Memphis Theological Seminary (an institution of the Cumberland Presbyterian Church but recognized also by the UMC) and of the Vanderbilt Divinity School. He was listed as Bishop-in-Residence at the West End Church in Nashville, whose pastorate he once held.