All I can add to the thread is that I've never seen throwing a gun (or any other futile object) as such an objectionable move (though it can be funny in some instances). I mean, all it is is a desperate action - something you know isn't likely to do any real damage, but you have to so something when in a drastic spot and in a moment of panic. It's better than just standing there doing nothing.

"Physical Media: Alive and Well, Forever!"