I do believe that some sort of organized plan could have an impact.

Yes, it could work.  You can definitely try.  

During the run-up there were certainly some of that going on.  Not that it was "masterminded"  but the confluence of interests did make such run-up schemes possible. 

For example, a builder would sell the models to investors in order to create comps.  

Smaller, infill developers would sell a couple of units to friends, relatives, or subcontractors to create comps for their developments. 

You also had "groupies" buying at each developments and flipping then buying at the next development. Those groupies were always first in line.