He may have known it under a different name.
Until this incident I never heard of it.
And the words "stand your ground" do not appear in the statute.
He does have ADD you know. I'm sure he isn't the most avid reader.
It's always been called "Stand Your Ground" here in Florida, but you are correct. The exact wording in the statute is:
A person who is not engaged in an unlawful activity and who is attacked in any other place where he or she has a right to be has no duty to retreat and has the right to stand his or her ground and meet force with force...