Okay, I just read the whole speech. Perfectly coherent and logical save for a plausible reason for abruptly quitting office mid-term (ethics complaints, not being a lame duck?) or an explanation of what she plans to do now. All these thousands of posts at FR are speculating about what her true reasons and actual plans are, because her speech doesn't answer.
Also, since I got to read the whole speech, I note that the quote she gave for MacArthur is misattributed. This was actually said by Marine General Oliver Prince Smith, to describe the movement of his Marines at the Chosin Reservoir. The rout of the 8th Army could not be described by MacArthur as "advancing in another direction". In Palin's defense, MacArthur is cited as being the source of this quotation at a thousand web sites.
In the words of General MacArthur said, "We are not retreating. We are advancing in another direction."
In the words of General MacArthur said?
That was addressed more than adequately -- to paraphrase, she (through the ankle-biting of her political enemies) has become a distraction to the state of Alaska; the ethics complaints are forcing her to waste the state's time and money and show no signs of stopping.
In the words of General MacArthur said?
What, you've never made a mistake when speaking by inserting an extra word?