No one owes anything to a LIE - one walks away from deception and any vow to that deception. They don't entertain it with asking why. They already know why - satan is hell bent on deceiving - nothing new under the sun.
What lie? People are not tricked into monastic vows, -- they undertake them freely, or the parents do on their behalf till they become of age. They can also get out, -- it is not a prison sentence.