Check out this story of a woman who went through the WCG changes, left the church came back, spent ten years in GCI and then left again.
Sandy Blank went through the big doctrinal changes in the Worldwide Church of God, became thoroughly disillusioned, and walked out. After having a powerful conversion experience she went back to Worldwide (now Grace Communion International) to try to make a difference, but left again after 10 years. In “My Theological House” she describes her experience using a punchy metaphor that captures the feeling of desolation that comes from leaving a Bible-based cult.
Her entry is here: My Theological House