The Church all along was against abortion from conception ,anything that anyone said afterwards means nothing since dogma can never change. There is no authentic record of what Dave Hunt is even saying that states the Church changed its position . Hunt is a liar.
Contraception and Abortion
Sixtus V (Elected 1585) is noted for developing the Church's teachings on contraception and abortion. While the Catholic Church had always taught that abortion, homicide, and contraception were all gravely sinful actions ("mortal sins"), not all mortal sins demanded the added, highest penalty of excommunication[citation needed]. Although homicide had always required this penalty, contraception did not. Theologians and other scientists had debated over the exact moment the concepted being became a human. While there was no question that life was present at conception or that it would only become a human being, this does not necessarily mean God infuses the rational, immortal soul into the body at conception. Following Aristotle, many speculated that the matter had to be prepared to a certain point before this could happen and, prior to then, there was only a vegetative or sensitive soul, but not a human soul. This meant that killing an organism before the human soul is infused would still be a grave sin of abortion (or at least contraception), but that it was not properly a homicide and, thus, did not require excommunication.
Some theologians argued that only after proof of the "quickening" (when the mother can feel the fetus's movement in her womb, usually about 20 weeks into gestation) that there was incontrovertible evidence that ensoulment had already occurred. Until Sixtus V, Canon Lawyers applied the code from Gratian whereby excommunications were only given to abortions after the quickening. In 1588, however, the pope issued the papal bull, "Effraenatam" (Without Restraint), which declared that the canonical penalty of excommunication would be levied for any form of contraception and for abortions at any stage in fetal development. http://en.wikipedia.org/wiki/Pope_Sixtus_V
Also in 1591, Gregory XIV modified the Apostolic Constitution Effraenatam of Pope Sixtus V (1588) so that the penalty for abortion did not apply until the foetus became animated. (http://en.wikipedia.org/wiki/Gregory_XIV)
A brief timeline:
Circa 100 to 150 AD: The Didache (also known as "The Teaching of the Twelve Apostles"), was a document written for the guidance of Christians. It forbade all abortions.
Prior to 380: Many Christian leaders issued unqualified condemnations of abortion. So did two church synods in the early 4th century.
Circa 380: The Apostolic Constitutions allowed abortion if it was done early enough in pregnancy. But it condemned abortion if the fetus was of human shape and contained a soul.
St. Augustine (354-430) accepted the Aristotelian Greek Pagan concept of "delayed ensoulment". He wrote that a human soul cannot live in an unformed body. 3 Thus, early in pregnancy, an abortion is not murder because no soul is destroyed (or, more accurately, only a vegetable or animal soul is terminated).
Pope Innocent III (1161-1216): He determined that a monk who had arranged for his lover to have an abortion was not guilty of murder if the fetus was not "animated" at the time. Early in the 13th century, he stated that the soul enters the body of the fetus at the time of "quickening" - when the woman first feels movement of the fetus. Before that time, abortion was a less serious sin, because it terminated only potential human person, not an actual human person.
St. Thomas Aquinas (1225-1274): St. Thomas thought that the soul did not come to the fetus ('ensoulment') until sometime after conception. In fact, he considered abortion gravely sinful, teaching that it was a grave sin against the natural law to kill the fetus at any stage and a graver sin of homicide to do so after ensoulment.
Pope Sixtus V (1588) issued a Papal bull "Effraenatam" which threatened those who carried out abortions at any stage of gestation with excommunication and the death penalty.
Pope Gregory XIV (1591) revoked the previous Papal bull and reinstated the "quickening" test, which he determined happened 116 days into pregnancy (16½ weeks).
Pope Pius IX (1869) dropped the distinction between the "fetus animatus" and "fetus inanimatus." The soul was believed to have entered the pre-embryo at conception.
Leo XIII (1878-1903): He Issued a decree in 1884 that prohibited craniotomies. This is an unusual form of abortion used under crisis situations late in pregnancy. It is occasionally needed to save the life of the pregnant woman. He issued a second degree in 1886 that prohibited all procedures that directly killed the fetus, even if done to save the woman's life.
Canon law was revised in 1917 and 1983 to refer simply to "the fetus." The church penalty for abortions at '''any stage of pregnancy was, and remains, excommunication.'''
http://wiki.answers.com/Q/Did_the_Catholic_church_always_unequivocally_oppose_abortion