I think you should lie down in a dark room.
Isn't that what they all said to Edison?
I thought it was a good example of using one's imagination for possible solutions. I don't think it would work without substantial re-design/modification of the RAT/Emergency Electrical generating system but someone's thinking.
Deployment of the RAT, at least on the A330, automatically sheds most electrical busses due to the greatly reduced generating capability. The blade pitch is fixed and the generator is kept at constant speed by other means.