PBA-
No, it would not disturb me to find that in the Olam Ho’emes things are quite different from how we see things down here. In fact, we are told to expect this is the truth.
However, I don’t think that this means we should be trying to figure out how Heaven will deal with such people. We have the obligation to deal with them in the way that seems correct based on our limited understanding, guided by Torah principles. If we act correctly, Heaven can right our errors. If the man does not have the status of Shoita, we will not make excuses for his misbehavior.