Dear John 6.66=Mark of the Beast?,
I don't think that the Charismatic Renewal, as it occurred within the Catholic Church, led to much defection of Catholics from the Church. What I saw during ten years of active participation (going back 30 years, now) was that it revitalized many parishes, and revitalized the personal Christianity (although not always the personal Catholicism) of many individuals.
By the early 1980s, a lot of the excesses of the movement had worked themselves out, and in many cases, Charismatic groups sought ever more orthodox expressions of Catholicism. The Holy Spirit used the Renewal to take many lukewarm Catholics, many Catholics with little knowledge or understanding of their faith, to draw them back to the Church as their Teacher and Guide.
Certainly, some Catholics left the Church via the Renewal, but this often happened for reasons unrelated to the Renewal itself (divorce and remarriage, and mixed marriages being two principal reasons).
As well, there were certainly some Charismatic communities where the wheels just about flew off the wagon. There was one community in the Washington, DC area that turned into quite a mess.
However, because the Catholic Church officially embraced the Renewal (tentatively, at first, and then more enthusiastically under Pope John Paul II), the Church was able to exert a little disciplinary pressure that helped guide the main part of the movement in an orthodox direction. As well, that embrace helped minimize defection from the Church because of participation in the Renewal. The Church did not ever take the position that one could be a good Charismatic, or a good Catholic, but not both. Just the opposite.
sitetest
That you for this enlightening history lesson.