I just watched a documentary about the construction of the mountain. They couldn't use regular scaffolding when doing the finishing (painting and sculpting) as with that scaff in place they couldn't see the mountain. So they actually designed it so the structural members of the mountain extended about 5 feet out, allowing planks to be put in for the finishers to stand on. Once the finishing was done for a given level, they actually CUT these members back flush with the mountain, and did a bit of finishing to cover them up.
So yes, there is a lot of that mountain's design that is strictly one way - they could do stuff as it was being built, but once the buildout was complete they could not go back and fix stuff very easily.