Thank you for your very good question!
I will give a bit of explanation to your thoughtful question.
First, let us erase that word “sin” from our vocabulary. In the understanding of the “unlimited,” we can see that there is a movie going and actions will be performed which have a consequence. Without those activities, we wouldn’t be able to experience duality and thus, go back to non-duality. It is best to refer to “sin” as “body conscious” activities; for these actions are performed in that consciousness.
In that way, we can erase the idea of “bad” that comes with the word “sin;” for after all; we will experience the fruit of those activities; which as we know; are part of the “eternally repetitive” Drama of life.
A “sin” is the experience of suffering as a consequence of a previous deed. “Vikarma.”
That stage of a “detached observer” also known as “witnessing,” or a “trustee,” or being “karanhar” and letting “karankaravnahar” work through us; we could go through the movie of life without being affected by it. Just observing and enjoying the “show,” the movie.
Therefore, there is no such a thing as “cutting off” sins; for the law of karma will do its work regardless but this time, we will not be affected by it. That is how the “crucifx will change into the experience of being pricked by a thorn.”
Now, here the important point: As we settle our karmic accounts, we will be experiencing that stage automatically, for less things will be able to affect us. BUT, if we practice that stage ( I rather say, experience that stage) then, we will be able to “accelerate” the stage of not experiencing those “karmic accounts” with the same intensity until there is no longer the experience of that karmic account, (it doesn’t affect us) so we are free from it.
Thus, greater experience of the stage of a detached observer, less experiences of karmic bondages. That is the meaning of “cutting off sins.”
In Sakar Murlis, that stage of being a “detached observer” is known as “karmateet.” Brahma Baba mentioned that this stage will be reached at the “end.” However, in avyakt Murlis, that stage of being “karmateet” or a “detached observer” was updated to “living now,” and not just at the end. In this way, we could be experiencing those karmic bondages but feeling them as a “thorn pricking our little finger.”