I do feel that peopel are reading WAY too much into the whole Glinda thing.
That being said, from what I understand it isn't uncommon for a show that is cast via reality show to have a 2 week trial period for the winner. I know that they did this in Grease and I think they do this in the West End with the recent crop of reality casting show there. The whole point is to see if she is good and for the people who did the casting to make sure that there isn't a mistake. For Grease it was to make sure that the people voted two people who could actually do the show and for Legally Blonde it is to make sure that the judges picked someone that can do the role.
It's just a saftey net so to speak. If she can't do it they can pull the plug after two weeks if she is fine she will continue for the 6 month run. But, after reading a comment in the spoliers for the reality show thread about her not doing so well in rehersals I wonder how she will fair in her turn on Broadway. I will tell you one thing. That watching this reality show has got me wanting to go back and see Legally Blonde one more time. And, I thought I was done with that show for a long time if not forever.
"If you try to shag my husband while I am still alive, I will shove the art of motorcycle maintenance up your rancid little Cu**. That's a good dear"
Tom Stoppard's Rock N Roll