there is a bit more to it than that.
The boat needs to be given room to make the course change to avoid the luffing boat, you cannot just sling the tiller over !
Actually if the windward boat is correctly keeping clear, the leeward boat can just sling the tiller over. Check out your definition of "Keeping Clear"
"One boat keeps clear of another if the other can sail her course with no need to take avoiding action and whent he boats are overlapped on the same tack, if the leeward boat can change course in both directions without immediately making contact with the windward boat."
That doesn't mean the leeward boat can plow straight into the side of the windward boat.
Tiger Mike