Good point.
Her speech was personal and open with an audience she clearly related to.
I thought it was warm and funny, the authentic Sarah.
But it does seem that there was an establishment over reaction, which means...they want her out of the way. Perhaps it was coordinated.
Karl Rove is the guy I would look at first, holding hands with Rahm Emmanuel and his 'RatRoots pseudo-grass Internet players. The same ones who were called "The Ankle Biters" when they were trying to engineer a public-integrity show trial for Sarah using Alaska' s 'Rat-written law that was specially written to tie Sarah in knots answering dozens of malicious accusations instead of doing her job.
Don' t forget about those guys, they are no doubt active as ever. If they haven't lapsed into Krispy Kreme-induced diabetic comas.