In his book, Liturgical Time Bombs in Vatican II, Michael Davies expands on a famous saying of Archbishop Lefebvre, "There were time bombs in the Council." Davies explains, "These 'time bombs' were ambiguous passages inserted in the official documents by the liberal periti or experts - passages which would be interpreted in an untraditional, progressivist sense after the Council closed."
Davies shows how Father (later Archbishop) Annibale Bugnini - before being removed from his position by Pope Paul VI under suspicion of being a Freemason - was able to "reform" the Catholic Mass into the constantly evolving liturgy which continues to self-destruct to this day. Quoting Bishops and Cardinals, as well as liberal periti and Protestant observers, Davies points out the ambiguities or "time bombs" which were built into the Second Vatican Council's document on the liturgy and how they have been detonating ever since in liturgical abuses, both unauthorized and authorized. The book is available here.