Other folks can and do refrain from such behavior w/o any sacramental grace whatsoever. They do so by virtue of their own free will.
"Since you deny that even the Blessed Virgin was preserved free from would you care to explain why you expect that a mere parish priest would be?"
Preserved free from what?
It is without question that the priest has fallen and committed a grave sin. He is in need of our prayers and forgiveness, but the Church did not commit the sin.
Are you saying you are free from sin or only that your sins are less than those of the fallen priest? Is any sin, save blasphemy, worse than any other sin in God's eyes? Are you prepared to confess your sins to us here?
"If we claim we have not sinned, we make him out to be a liar and his word is not in us." - 1 John 1:10
"Truly I tell you, people can be forgiven all their sins and every slander they utter, but whoever blasphemes against the Holy Spirit will never be forgiven; they are guilty of an eternal sin.” - Mark 3:28-29
Peace be with you