1. The WT's policy of confession, judicial procedures and disfellowshipping has no basis in scripture.
2. Even if it did have basis in scripture, use the same double-standard. hypocritical rule the WT uses to get its Elders ( aka, "glorious ones") off the hook when they're guilty of committing disfellowshipping sins in the past but didn't confess:
"Shepherd The Flock" book, p.38:
19. If it comes to light or an appointed brother confesses that he has committed a disfellowshipping offense years in the past, the body of elders may determine he can continue to serve if the following is true: The immorality or other wrongdoing occurred more than a few ago, and he is genuinely repentant, recognizing that he should have come forward immediately when he sinned. (Perhaps he has even confessed to his sin} seeking help with his guilty conscience.) He has been serving faithfully for many years, has evidence of God's blessing, and has the respect of the congregation.
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You see, the WT has two standards: one for its men in power, and the other for the rank-and-file. The Elder has a "get out of jail free" card; you, as a mere "publisher" will suffer the full wrath of WT policies should you confess.
What's done is done. Move on. Don't be a slave to WT nonsense.