I hope you do not view my last post as some sort of 'drive by posting' and I hope you will forgive this very poor answer (which is actually a non-answer) about 'what the Protestants do mean by it.'
But, this is not a short answer essay question by any means. And, I do not want to insult you by throwing some book titles at you as a non-answer. But, (knowing this would not be labor of love on my part) I'm not sure I have the energy to get going on a survey here to look at the different views which is what would be required because there is no such thing as the Protestants in terms of a unified particular group--I don't think there ever was. And, this is why I say there is no such thing as "the Protestants" when it seems appropriate. In fact, it seems the only time I ever hear the word Protestant anymore (with some exception) is when someone who is not a Protestant has a craving to play a little Aunt Sally because possibly they are tired of bayoneting the scarecrow in their backyard and kicking puppies isn't as fun as it used to be.
While I think if Luther could have seen into the future he would have kept his mouth shut and broken all of his pens, he might not have been disappointed at all with the writing of Karl Barth on the Word of God in 1:1 of Barth's 13 vol. series. And, I bring this up because this book in tandem with another that I have been skimming in the book store and looking for an excuse to purchase:
Amazon.co.uk: Christianity's Dangerous Idea: The Protestant Revolution--A History from the Sixteenth Century to the Twenty-Fi.
is how I think I would attempt to wade into this question. I've got a birthday coming up in a couple weeks, maybe I'll ask for this and if you are up for it give it a shot through these vehicles which I think could possibly offer something remotely resembling a short course. This is a crazy thing though in my opinion because even though most "protestants" seem to view Barth as a heretic, what he writes about in his first volume is what I feel is behind the majority view of Sola Scriptura as well as what is found in the Holy Tradition of the Orthodox Church.
Actually, McGrath has a new book out on Natural Theology that I'd rather have, maybe both if I'm lucky. So we will see . . . assuming you have no problem with second hand sources John.
Now about this Churchill guy, just who exactly was he and why did he do the things he did?
Peace to the readers.