Toruck, theoretically yes what you said could happen but really what do you think the chances of that are, seriously? Firstly the primary governor would have to fail, the over speed governor would have to fail, then the fuel topping governor would have to fail. Then finally in your scenario, the ability to feather would have to fail.
As Horatio said, Occams Razor.
I hope the investigation on this accident gets published in a better time frame than other investigations have been getting published. I'm sure there are many people who are interested to find out what occurred.