Is the government preparing a u turn on A30 dualling at Temple?

In the Autumn statement, George Osborne announced funding for the dualling of the A30 between Temple and Carblake. This was created by much fanfare, previous requests to get the work done have all been denied by central government. See here for the Department of Transport's summary of previous appeals to dual the remainder of the A30 including this small section.

At the time the Liberal Democrats announced their chancellor's generousity as a triumph:

"The Coalition Government today announced that they will be providing the funding to upgrade the A30 between Temple and Higher Carblake to dual carriageway." St Ives Liberal Democrats

Now however the Cornwall and Isles of Scilly LEP (uncharacteristically shifting their attention away from Newquay enterprise zone/ Aerohub) is asking for help to lobby the government for funding. A30 Temple Improvements we need your help:

"The government has only given provisional approval subject to a business case and a strict timetable for delivery - without the economic evidence it could be all off!"
  
Do so here if you wish. 

Apparently previous economic cases for the upgrades are no longer worth considering. The international infrastructure consultants Parsons Brinckerhoff have been employed to survey the people and businesses of Cornwall. That American company now owned by Balfour Beatty have set up a (free) Survey Monkey survey for people to have their say. I'm at a loss for the justification of using consultants for such a task and question whether an upgrade of less than 3 miles of trunk road really justifies the expense such a contract incurs. I think the government should come clean and commit to funding the improvements. People want honesty and openness from elected officials and authorities. If this consultation and surveying period is simply to delay  the process of starting works or to kick this scheme into the long grass then they should admit this.