Exactly. If you look at what The Newcastle team Mission Statement declared was a goal - to find if there was a diet that could emulate the effects of Bariatric Surgery, which, at the time, was the only official cure for T2D and Obesity that the NHS had to offer at great expense and use of resources.
At that time it was known that Bariatric Surgery (but only one variant of it) provided a 'permanent' solution, so that defined their Holy Grail quest, and it is why they got funding from NHS and DUK to explore the effect on the liver and pancreas in such detail. They did a great job in that and were surprised at the evidence they found so strongly on their first pass.
DIRECT is a new initiative to provide the NHS with a turnkey solution. There was nothing in the ND diet that had not been done before for weight loss and that type of diet had already achieved NHS approval. It was just a vehicle which allowed them to control intake in a formal trial. It in itself is nothing new. What was new was the using of MRI Scanners to provide the evidence and the laboratory testings they carried out. The possibility of remission was actually a serendipitous moment, the icing on the cake, the hook to grab the public's attention.