Self manipulation of the dream is a dangerous ground to live around. Sins against the Spirit are not forgiven.
Might think about the body and soul and spirit as being a training ground for future work in a regenerated spirit, resurrected body, and sanctified soul.
Consider 2 facets of Scripture. Those who exalt themselves are made low. All things that are holy are provided by God for us. The fall in the Garden and with the fallen angels was a separation from Perfect God. In the case of Adam, his death in the Garden was a separation of his spirit from the Spirit of God.
Once we are saved and have a regenerated spirit, we can begin to discern things spiritually. Again, anything done independent of God will also be judged by Him regarding good works. If our actions are rebellious from His will it is sin, and those sins may occur in the spirit as well as in the soul or the body.
I find it encouraging in such dreams to place the situation in His hands and remain believing in Him through faith in Christ. This may be done without the left hand knowing what the right hand is doing, yet still living by His plan rather than by our own works independently of Him, which will later warrant judgment if unrighteous.
Interesting take.