I was looking to access it also and got the same message.
It sounds harsh to fire people, but sometimes you get shows that have people in it way too long, particularly a show like Lion King that is seen as an ensemble show. On some levels I am torn about the current Rafiki on Broadway, she's been with the show forever, and in Toronto even before then. But she is a lovely person and I guess is seen as sort of a 'mother' to the cast, but they are way better sounding Rafikis out there nowadays.
I don't agree about grasslands chant, It is a wonderful moment in the show when they rise up out of the ground, I suppose it could be shortened, but not eliminated all together.
http://www.flickr.com/photos/27199361@N08/ Phantom at the Royal Empire Theatre