I'm not trying to be a smart arse, but isn't the Castle Doctrine designed to prevent that from happening? I'm just curious, I hadn't heard anything about the Castle Doctrine until just few weeks ago.
The castle doctrine laws just provide you with a legal reason to have the lawsuit dismissed. If the judge decides the issues are important enough, he can allow the suit to be heard. The Fair Commerce in Firearms Act was supposed to stop the lawsuits against gun manufacturers. Yet the NYC suit against several manufacturers is still going on.
You can be sued for anything a judge will allow to be heard. All it will take is an attorney to come up with a story that convinces the judge that your conduct was so outrageous that it doesn't deserve protection from the castle doctrine law, and the suit will go forward.
Jeff