A hung parliament will be the best outcome for the Tories in the long run. In other words, I agree with the head of the bank of England.
If cameron gets in with a majority this time the fickle British public will vote him out in 5 years due to the impact of the necessary cuts. A hung parliament will show (IMHO) that consensus government won't work in the uk as a whole (it's more suited as a model to regional government) and as such I believe we'd see another election within 2 years at which point the public will have a much clearer view of the viable options.
So i'd be surprised if cameron isn't secretly wishing for no overall decision next week (whilst not microphoned up, obviously)