Hi Richard,
Good post.
We are not claiming to have the power in our flesh of ourselves. We are claiming that by acknowledging the death of Jesus to our flesh - which is a spiritual work of the Holy Spirit - we now have power over our whole bodies to cause our flesh to walk in the life of the Spirit. Gal 5:16
Romans 8:1 [There is] therefore now no condemnation to those who are in Christ Jesus, who do not walk according to the flesh, but according to the Spirit.
That is - to borrow Tyndale's phrase - who do not walk given to the flesh, but given to the Spirit. In other words, our bodies serve God's purposes.
Romans 8:2 For the law of the Spirit of life in Christ Jesus has made me free from the law of sin and [therefore leading to] death.
Our natural bodies have natural needs which God has ordained to be fulfilled, as well as controlled (where necessary) by decency, order, natural love and affection, and the power of the Holy Spirit - because 'the sin' did make them go crazy. God has stated His Maker's Instructions for many of these, especially around relationships with others. The Holy Spirit helps us to we walk in the righteousness of God as we abide by these.
1 John 2:1 My little children, these things write I unto you, that ye sin not. And if any man sin, we have an advocate with the Father, Jesus Christ the righteous...'
Unless a sin has involved another person in hurt or harm - which some would say is always the case, because while we are sinning we are not attending to something else we could or should be doing as the Lord would lead us - then it is a matter between the person who sinned, and God.
Public sins, and sins of public people whose authority and reputation is compromised by their having fallen, do need to be addressed publicly for the sake of those whom they lead/led. This is also (in the Church) for the sake of the reputation of the Lord Jesus Christ.
For the individual before God, there is no substitute for honestly bringing the trip-up issue to Him again and again, until we have it fully sussed and conquered. Yeah there might be some sweat and pain, but not more than He sweated and hurt for us to receive deliverance.