What if there's a radiant out there with cloning abilities? maybe we are defending sites from evil clones this mysterious antagonist sends out with the spikes? I think it might be some organization rather than one radiant.

Killjoy has a line talking about stolen tech, which leads me to believe that some group out there is running around bombing high-value sites with stolen blue-rinse bombs. probably stealing information on other possible targets (maps) and other Radiants.