Wicked – the Spoofical

I’m about 1/3 through [Wicked](http://en.wikipedia.org/wiki/Wicked_(novel)), and having seen the musical adaptation, I’m somewhat confused. I know movies and musicals based on novels commonly encounter issues compressing the material into two hours of nonstop entertainment, but this example is such a ridiculous extreme, I wonder if they didn’t purposefully throw out 95% of the book to avoid confusion.