Some of the most heinous acts in all history have been committed by believers out of fellowship with God.
BTW, this is a feature which Satan also hates in us. Neither can he control us when we sin. We might be rebelling from God, but the Adversary can’t forgive,...it’s not in his nature.
One of the greatest gifts of God is the freedom of choice. Control, as it were, over our own decisions in life. Whether to do good or evil.
A person who becomes an alcoholic has given up much of their God-given freedom in order to satisfy base desires. Thus allowing Satan to have that much more influence and control over him.