Yeah, thats where the grey areas creep in. People start abusing consideration or what a ho is, or when they can bend the line to fit their motives. At the end of the day, it would be alot worse if HO were turned off somehow, and you couldnt fall back onto a joust when you really could have done in real life.
This isnt a thread to promote head on attacks of course but it does illustrate how survival can sometiems depend on the quick descision to ho the ho'er back before he kills you. If you hesitate youre going to die and be pissed off abou the way you died.