Using these words makes it sound legitimate. But they are only adapting these terms to the Enneagram, by giving them different definitions. It has nothing whatever to do with holiness. Sin is not a deliberate transgression of God's law. The word is redefined into personality traits that separate people from God or their real selves.
Sin is the sinister motivation everybody has for everything they do, a part of human personality.
It must be accepted and brought under control. It describes the conditions in the environment which cause the imbalance among the three intelligence centers. These have nothing to do with the Holy Spirit. In the Enneagram, the fruits of the spirit are good inclinations a person gets according to his number in the Enneagram. According to their definitions, a person cannot have true faith unless he has doubts.