http://www.twww.twoturmoils.com/TaipeiHistory.pdf
Larry Chi wrote a book that included the history of the church in Taipei and some other churches in Taiwan, after he left the recovery in 1985, (approximately). The book included a word about the young Titus Chu who had come onto the scene and became involved in giving training sessions, and became a concern to others, including Witness Lee. He is still a concern, whether or not it should be so great as "advertised".
The word about him is not included in the link above; but some very interesting historical accounts are given, including what is referred to as the 1965 massacre, which should relate to the 1966 so-called rebellion.
I can't confirm Larry Chi's accuracy, but he was certainly burdened to give his viewpoints, based on his experience and observation. He was in his 80s when I contacted him last in CA, both by phone and email, 5 years ago. He was referred to me by another dear Chinese brother in his 80s, from Sydney, who has since passed away. Both brothers were very much concerned for the developments that took place before them in the recovery under the leadership of Witness Lee.