Let me see if I understand you correctly. When someone is saved in Jesus Christ his body/soul are separated from his spirit. While the body/soul are capable of sinning, the spirit is not. I am sincerely not trying to misrepresent your position. Please correct me if I have gotten it wrong.
If you would like more, on my FR profile page is a hyperlink to a short essay I have composed explaining the nature of our hyperdimensional reality. HINT: our spirit exists in a coordinate system greater/different from the coordinate systemn of opur current physical body.