Those people coming out have a heightened fear of getting involved with any other group that might control them. There is also a battle with guilt and feelings of defectiveness. Cults harp on perfection. You can't be in a cult and not continually fail. Blaming themselves is a second set of berating, first from the leader of the group, and second from exiting and thinking there's a defect within them.
Former cultists are under-experienced in dealing with conflict.
While in the group they were not allowed to disagree with leadership. When they exit, even minor arguments are exaggerated and differences of opinion are viewed as a major conflict. Children and teenagers that come out of cults need to understand that they were taught to dislike non-members of their group, as well as relatives. They need help reconnecting with grandparents, aunts and uncles. Teenagers have difficulty coming under the authority of their parents because they were raised under the leader's authoritarian, dogmatic ways, and they saw their parents being put down.