If a person does not express a willingness to deal with his sin, find another church leader who will go with you again to the individual. If that fails, then present the case to the entire church leadership for their investigation. An unrepentant person or someone who has destroyed his reputation should be removed from leadership. Leaders who want to rule but not serve. A deacon or an elder should be assigned a clearly defined area of responsibility in the church.
Effective leadership is involved leadership.
If your church allows nominations from the congregation, a candidate should be suggested for consideration by someone who knows the person well and genuinely believes that the nominee is qualified according to the standards of 1 Timothy 3 and Titus 1. In order to protect nominees from possible embarrassment and to prevent potential discord, it would be wise first to suggest candidates in strict confidentiality to current church leaders. In addition, it would seem wise to ask the candidate to examine himself according to biblical qualifications prior to any public announcement. He should withdraw from consideration if in good conscience he does not feel he is qualified. And in the case of nominations for elders, thorough interviews would be appropriate.