> The researchers, the researcher's bosses and pretty much every person in command at UMN had to sign off on this being an acceptable method of conducting research.
That is nothing like how research operates at a university like UMN. At a research university, typically the only person that actually must sign off on a computer science experiment is the grad student / professor actually doing the work. Graduate students frequently clear their work with their advisors first, but even that isn't strictly required. A small amount of work technically requires IRB approval, but unless what you're doing is very obviously human subject research, it is unlikely anyone would even notice if you went rogue and ignored it.