I understand and I agree about the lack of available information. A self-defense claim may certainly apply given the scenario you suggest and may be what is ultimately decided to have occurred in the GA case we have been discussing. The letter from the prosecutor seems to give some further insight into the details and his views on the matter.
My citation of KRS was in response to the statement “Find a state where you cannot use reasonable/necessary force to make a citizen's arrest of a felon whose crime you witnessed”, not the specific incident in GA. I was pointing out that deadly force may not be used in making an arrest in KY, except by peace officers under very specific circumstances, no matter whether the citizen making the arrest felt it was reasonable and/or necessary to do so. The statement was later clarified to say that it meant reasonable/necessary force, excluding deadly force.
Although I tend to agree with the clarified statement, I strongly feel is best to call the police, be a good witness, and let them handle it most of the time. Felony or not. Especially for property crimes. That way there is much less risk to one’s health, freedom and finances should things go sideways.