The second option of their plan was relatively simple to understand and yet rather simple to execute.
Obliteration.
All they had to do was sweep the entire city for three days, disregarding everything they had worked hard for. Probably because no matter how careful they were or focused their attention on their job, questions such as "Did we really do it right" or "Have we really searched things through" plague their mind, questioning their whole sanity.
Hence for these questions to disappear, they'll have no choice but to force an outcome that everyone can agree on.
It should be enough to gather at least something by obliterating their surroundings and leveling the groundwork.
If not, then they'll have no choice but to move to the third option, an option that they should be avoiding since it's just full of uncertainties and difficulties.
