Honestly, you need to scrap the whole choir thing for a season. Go with a praise team, if your musicians can sing make them sing too. I would bring in guest soloists, bring in dance teams, show youtube clips of other choirs through your media ministry...
The NCAA has a punishment for out of control athletic programs. It's called the death penalty. Your music program is out of control.There is no respect from the top to the bottom. Nothing like some good ole fashioned humble pie to get things back together.
Your music ministry is in need of a revival via a gospel workshop. During the weeks when the choir is not singing I would use those rehearsals to bring in music Pastors from the area to teach about the office of a Levite. Those who miss the classes aren't "certified" to "minister through song" until the next semester of "classes"...
People won't do better until you train them. Honestly, it will be extra work but it will work.
Right now you need to prepare your case to present this to your Pastor. Nothing speaks clearer than hard cold statistics. What stats do you need? % of singers present to rehearsal, % of those on time to rehearsal, % of those who sing on Sunday, % of those on time for prayer on Sunday, % of repeat offenders should be a good start.
I gotcha back! Take down the data for at least one month. Hit me back later and we will chat about how to conduct the meeting with your Pastor.
MrSparrow