Hello Brother,
Interesting topic and interesting verses---probably one of the hardest things to do to a person is to "reject" them or let them go/separate them, especially since as Christians we are called to love and to love even more. 1 Corinthians is one of my favorite Books of the Bible--- my favorite chapter comes from this and is Chapter 13, which is the very famous chapter about love (how ironic). But before I throw in my two cents about the verses you shared, I wanted to show you this.
I don't exactly remember why I highlighted these verses in my Bible, but I thought they might play well with my message and I wanted to share:
"My message and my preaching were not with wise and persuasive words, but with a demonstration of the Spirit's power, so that your faith might not rest on men's wisdom, but on God's power." ~1 Corinthians 2:4-5
We grow up thinking that the true Christian is ever loving and does nothing to harm a soul or create havoc in another person's heart. And we, as Christians, are taught that God loves us so very much---He sent His own Son to die for us! But we hardly learn or want to admit that God provides a different kind of love to us at times--- He provides the tough love at moments in our lives when we have to learn certain lessons.
And I think these verses in Chapter 5 reflect that tough love of making sure our Brethren get back right with our Lord and Savior. It opens up by saying that these so called believers were doing worse sexual sins than even Pagans! And now is the time that these people either continue what they're doing or repent of their sins and change their ways.
Here we discuss two types of people:
---People OUTSIDE of the Church, whom God will judge and we are called to help teach them about Jesus.
---People INSIDE of the Church, who are fully aware of who Jesus is, but still lives immorally and does not show any signs of wanting to change.
These verses talking about removing that person is about the person who knows Jesus, but doesn't truly known or live FOR Jesus. There's a huge difference between the two and I'm sure when we step into our churches, we can easily point out a couple of them.
Does that mean we're judging them? Yes we are judging them---but we're judging them in order to give them a dose of tough love. Sometimes we don't realize how good we have it with our friends and family until we lose them---we lose that love, security, safety, and socialization that we need as human beings. So sometimes it's necessary for us to tell the person that if they would only turn their hearts towards God, He would do amazing things for them---and yes even a little bit of sin can prevent us from all of God's blessings.
"No eye has seen, no ear has heard, no mind has conceived what God has prepared for those who love him..." ~1 Corinthians 2:9
This verse isn't finished yet but it reminds us that God will do amazing things for us if we only repent. For those who wish not to repent, they must be separated from us-- either for a short time or for all of time--- and this should be seen as an act of love.
An act of love?
Yes! For two reasons, (1) we're showing the sinner that we're serious about wanting him or her to get right with Jesus. We long to have them in heaven with us---we long to see them do incredible things with Jesus' power. (2) We're protecting the flock---ourselves and the younger Christians (by faith or by age). I don't want a Sister coming up to the young kids in church and telling them how much she loves to go out and get drunk and meet some men. Those young in faith would wonder---well she's a Christian, that must mean it's okay for me to do it, and God will just forgive me later. So by us asking a person to leave our church until he or she is prepared to repent it is our way of showing love. Of course, I would suggest that a mentor help the person as well---the pastor or priest stay in contact with them, offer guidance, as long as the person shows some sign of wanting help.
Now going back to verse 9, I'm going to give the ending (or actually verse 10):
"but God has revealed it to us by his Spirit." ~1 Corinthians 2:10
God will of course send His Spirit, if we ask for it, to help us during this time. The person may be very upset with us--may call us rude things---but if in our hearts we know that without a doubt we are doing this for the very best of the person and for the flock we attend, we are in no way doing something mean or sinful. We should remember this person in our prayers and ask that the Spirit would surround and guide this person. Because it is through the Spirit that each of us realizes our sin and our need for God's love in our lives.