Over time, if such willful, unrepentant sin continues, you need to separate yourselves from it. It sows discord and will begin to lead others of the congregation astray. There comes a time to invite the unreceptive who remain in obvious sin to leave. If they're trying, that's one thing. Minister to them, but protect others from their error. If they're denying, that's another. They've got to go.
Well said. I agree.