Why would men stop you being a Jehovah's witness? You read the bible a book showing that with the exception of Jesus the men that followed Jehovah made tons of imperfect mistakes from murder, adultery, to killing God's own people.
So you found out Your CO was an imperfect human, why would that make Jehovah any less Jehovah?
I always find imperfection of men threads weird because the bible is very consistent in showing that shepherding does not stop us being imperfect. Moses still made mistakes, even Paul wasn't particularily impressive in person. But that doesn't negate the bible direction for us to have overseers, elders among us etc?
Titus 1:7
Since an overseer is entrusted with God's work, he must be blameless—not overbearing, not quick-tempered, not given to drunkenness, not violent, not pursuing dishonest gain.
1 Timothy 5:17
The elders who direct the affairs of the church well are worthy of double honor, especially those whose work is preaching and teaching.
I'm sorry if I sound harsh but I always wonder at imperfection of men as a reason to be stumbled. Surely Jehovah's usage of King David and Moses both murderers would create a massive stumbling block for you?