If God talked about a literal death (IE: Adam falling to the ground choking), he would have died that day.
Unless God was wrong, which is my point. God can only be made correct here if you're willing to twist language to match your preconceptions, and that's hardly a literal approach to the text, don't you think?
Your options are spiritual death, or removal of immortality.
Only if you're already committed to God never being wrong. If you're willing to entertain the notion that God could make a statement in error, or lie, then the text makes much more sense, and you don't have to twist the words. That's the third option that you don't list - God's statements are literally inaccurate.