The Permanence of Catholic Priesthood : Once a Priest Always a Priest

Is it possible to "un-ordain"a priest? It is not theologically or spiritually possible.Once a man is ordained a priest,he will always have the ability to offer the Holy Sacrifice of the Mass,and nobody on earth can take that ability away from him. Canon law follows theology, so it is no surprise that the code c.290 After it has been validly received sacred ordination never becomes invalid echoes the Catechism of the Catholic Church 1581-1582 in asserting that priestly ordination which is validly conferred never becomes invalid."You are a priest forever, according to the order of Melchisedech."(Psalm 110:4).Once validly ordained, a priest's ordination never becomes invalid,even if he loses the clerical state.Once a priest always a priest.Once a Bishop always a Bishop!No one can change that.The Church teaches that the effect of a sacrament comes ex opere operato, by the very fact of being administered,regardless of the personal holiness of the minister.That character remains on his soul for all eternity identifying him as one of God's ordained servants.Married Catholic priests are still valid priests in good standing theologically.The book is good to the Laity,Religious and clergy