Based on Cadel's comments in his biography, I would suggest no vote was taken. He noted that after they came out of the final team meeting - and discussion with DS Neil Stephens - he had to clarify with his room mate Simon Clarke (of ISD) that he was a protected rider based on Stephens' discussions in the meeting. There would be no need to clarify if a vote was taken. Besides, what DS is going to decide via a vote - its the DS's job to decide, and if he doesn't have the balls to make the call, he shouldn't be a DS/shouldn't be asked back.
The reality is, when the heat got put on in Switzerland, Gerrans couldn't match it, he won the sprint of his group, but that was for 10th, two groups back from the winner.