What makes it tough is that the sight lines are terrible..... and if you are looking a head you can kinda see where the road goes on the other side of the ravine.... so you wouldn't expect it to decrease its radius as much as it does. By looking ahead you'd think it would start turning right a bit sooner. That's an assumption and I believe that is one of the many reasons why people into trouble on that corner.
ALSO - if you approach that corner to the inside and are going a bit hot, it is VERY hard to make it as your trajectory will be ALL WRONG.
However, it does teach a VERY important lesson about street riding. Like BrianP said.... keep WIDE on corner entry when street riding, until you can see where the corner starts to open up. That does 2 things:
1 - prevents you from apexing too soon, therefore buggering your exit to potentially crashing results.
2 - if a car is going a bit wide, it gives you a greater margin for THEIR error.