Regarding my question above, the WT answers:
***w92 9/15 p. 12 Jehovah Forgives in a Large Way ***
Even if a judicial committee disfellowships an unrepentant sinner, he has not necessarily committed the unforgivable sin. To be forgiven and reinstated, however, he must humbly obey God’s laws, produce fruits befitting repentance, and apply to the elders for reinstatement. After a fornicator was disfellowshipped from the congregation in ancient Corinth, Paul wrote: "This rebuke given by the majority is sufficient for such a man, so that, on the contrary now, you should kindly forgive and comfort him, that somehow such a man may not be swallowed up by his being overly sad. Therefore I exhort you to confirm your love for him."—2 Corinthians 2:6-8; 1 Corinthians 5:1-13.