The report, which forms the basis of a response to the principles of the scheme following the publication of the draft orders for the £150 million project, was agreed by members of Waverley's full council on Tuesday night.
But after a vote of 30 to 18, it will now include an additional amendment. This is an effort to safeguard the needs of cyclists and disabled people when the tunnel is built, which had been omitted from the report to the executive
Councillors at a previous meeting of the environment, overview, and scrutiny committee last month had asked that the Highways Agency should look into the possibility of providing a metal surface on the downgraded byway, BOAT 500, which runs alongside the existing A3 and is now set to become a bridleway.
It would allow cyclists and disabled people access to the area, which they would otherwise be denied when the tunnel is built, because of the rough surface and steep gradient. Failing that, it suggested that a narrow strip of the existing A3 remain open for the same purpose.
But when the report was written, the suggestion was left out, much to the annoyance of Mr Duckett and other members of the committee.
"Why was it taken out?" asked Mr Duckett. "If you make an observation and request, you expect it to come back to the council," he said angrily.
"If they don't like it, they argue about it but the executive removed it with no consultation, and that results in 10 people on the executive committee dictating to the other 57 councillors."
That, declared Mr Duckett, "was not a democratic system and a slight against local democracy".
The amendment was proposed by the chairman of the environment overview and scrutiny committee, Richard Gates, and seconded by Mr Duckett.
Following Tuesday's meeting, Mr Gates said it was within the powers of the executive to cross out the suggestion but felt that it was appropriate to include the matter.
"Mr Duckett and I felt the issue was important enough to get a wider debate. It is merely a suggestion and a wish to try to support cyclists and others, while still recognising there is an over-riding argument for the closure of the existing A3 when the tunnel is built."
Haslemere executive committee member John Robini was against the suggestion to keep a suitable surface open for road cyclists.
He said he "objected to the upgrading of a footpath which in my view would allow unauthorised vehicles such as motorcycles and 4 x 4 vehicles to disrupt this very beautiful area.
"We would be building in a problem for the future and encouraging unlawful activities," he said.
Mr Robini was one of several councillors who spoke against the amendment on Tuesday night.
Other concerns over the report came from the leader of the minority Conservative group on Waverley, David Harmer, and issues surrounding the controversial Hazel Grove junction area.
He warned that unless a solution was found to stop the traffic generated by the two schools in the area "it will leave a huge problem for Surrey County Council to sort out once the tunnel is built.
"People in Haslemere will use the A286 to avoid the A287 to Hindhead, which will be jammed up in the school rush hours by school-run traffic. It will be a disaster; cars will not be able to get back out on to the road and it will block off the access to Haslemere as well," he warned.
"It is going to be a real problem for Hindhead."
Mr Harmer is among a number of people calling for a half-mile link road from the A287 near Nutcombe valley to resolve the perceived problem.