Are you fucking kidding?
Most people have the brains to understand "the skiers responsibility code" by the time they are about 5 years old, what happened to you?
Just because it's not a slow zone doesn't mean that you don't have be able to avoid a downhill skier. Maybe he was standing there because he was in the process of getting up after a fall, for all you know.
I'm not going to pretend I've never taken lots of speed over a blind knoll, BUT if I ever did that and hit someone, I sure wouldn't have the audacity to pretend it wasn't my fault.
It's 100% your responsibility to avoid the downhill person, period, end of story! That rule takes precedence over "don't stand in blind spots", because: Someone could be in a blind spot due to a fall, or because they had to avoid someone below them, or because they are a super slow beginner, whatever etc. Therefore the uphill skier is ALWAYS responsible for avoiding people downhill of them, regardless of what idiotic reason said person might have for being in a stupid spot.
Fucking unbelievable that you could pretend you are not at fault for hitting someone downhill of you.