Yep. and they should be. And in my church, after a certain time, and counseling, that is what we do (if it comes to that, we fallow the biblical form of discipline)
It does not mean they are not saved, because paul also corrected them when the person repented, and they refused to allow him bnack as if nothing happened.
He still called them brothers and sisters. Most of them were practicing sexual sin, His point was one of their members was practicing a sin not even the heathen would stand up to sleeping with a fathers wife) thats why got him so angry..