I witnesses a few questionable disfellowshipings, heard some heart breaking stories of control freaks breaking down little reeds. Ask yourself if a women in 1970 divorced her husband for having sex with twenty men at a bath-house, did the Watchtower Society contact her and tell her they had resurrected her from "death to life" by falsly condemming her to death? No! Homosexual sex with another man was not grounds for adultry with a women in Jehovah's progressive Organization in those years, because I think some powerful men enjoyed anal sex with their fellow men.
The Watchtower Society wants loves you to beg and grovel at their feet, another sister I know was disfellowshiped for adultry without confessing to sin. She was set up and walked away for ten years from the Organization, she had to come back and ask for repentance for something she never committed.
Sister three, she was accused of "lying", yeah imagine a Jehovah Witness who tells lies or embellishes on the truth! She was part of a witch hunt in super freaky town and finally told the brothers to "disfellowship me!". She had to repent of the sin of lying, she lied to the elders and Jehovah by saying "she lied to the brothers in the first interview trying to get her to confess to adultry which she denied time after time!
She was convicted of "lying" for telling the elders "I was at meeting on Tuesday, when there was no meeting that Tuesday night". She was hypomania suffering depression, she would get confused of days. They got her for "lying" it's one of the moments I am not proud of this religion and it's men. Spiritual stonning a mental sister for forgetting there was no meeting on Tuesday was wrong!
The stressed sister disfellowshiped for "I was at meeting on Tuesday" was kicked out and the Elder behind her demise allowed his son to remarry a 2008 JW female model with less miles on her. They traded in the broken down thirty-five year old woman for a newer "less used one". The son comitted adultry, or did he? Was he not free to remarry? She did not fight their twisted injustice and allowed the lie to perpetuate to show her humility to the Organzation! It took her two years to get reinstated for sins she did not commit!
To your original question, over the last xx years I have never seen anyone disfellowshiped exhonerated or heard of the Society coming to the rescue after years of false excommunication. "My Elders Right Or Wrong" is their mantra!