It's perfectly relevant. I never terminated a person without good cause.
" Do you have anything to say about this case and the question I asked you?"
The question you asked was, "How would you defend yourself in the wrongful termination lawsuit?"
Again, my "irrelevant" point was, I never terminated a person without good cause...in a civilian police department, even if I couldn't "terminate" this officer, he'd be riding a desk for as long as I had any influence over the matter.
So now you've gone from termination to riding a desk. The fact is neither you or anyone else could justify termination in this particular case.