Thing is if the desal plant is going ahead then the North-South pipeline was never needed. Droughts happen, it's not the first and won't be the last.
Sorry infamy but the North South pipeline was running full tilt for the most part of winter! Even through the major flood's in September they were still releasing the alloted amount out of Eildon when The Goulburn river was at major flood level and threating townships down stream!! Labour was doing everything the could to get the water to Melbourne before the election. King Teddy won allot of votes in saying he would shut it down and he has already repaid the faith by doing so.
As for it running at full tilt over winter, was this really necessary? It's not like the catchments were empty and certainly no where near as bad as elsewhere in Australia.
As for it running through September, it was actually turned off on September 7th. If you look at the Melbourne Water Storage site you can see the Sugarloaf pipeline allocation. This is water that was allocated to Melbourne storages, but hasn't been sent down the pipeline since it was shut down then. So given the pipeline has been shut down for 3 months now, Ted Baillieu hasn't actually changed anything, he's just said it won't get turned back on. Given there is no need for it with our recent rains, I hardly see how that is a big issue.
As you said, he said he was going to shut it down, all the electorates in the Goulburn River area voted in the Nationals with something like a 70-30 two party preferred result, so he's only doing what the people in those electorates wanted and these are the people that the pipeline affected the most.