I'll take a stab at it...
"Hello, Glacier"
"Hello, Curry"
"Is the fire ready"
"The fire is ready"
"Let the fire fall"
"The fire is falling..."
(preceded of course by "Indian Love Call".
I think it was stopped because the traffic was so heavy, it was killing the meadows, besides the traffic jams. Also, being an unnatural display, it went against the new policies of the park service, but I don't know if that caused it to be stopped, or the meadow damage initially. I know they tried to re-perform it on a one-time basis for a special occasion, and it was denied. I also believe the only time it was late (9PM normal) was when Pres. Kennedy was eating dinner at the Ahwahnee and wasn't finished. People were said to be grumbling about that one, can't say I blame them 8^)
There is a movie about this that they will play from time to time at Yosemite Lodge's evening program, done by Huell Howser, which is pretty interesting (and funny) to see once anyway.
Gary
Yosemite Photo Galleries: http://www.pbase.com/roberthouse/yo