The exact same way I "bring back PDFs" from the several law libraries I frequent - a flash drive. This happens everyday in college libraries all across the country.
In fact, several of the systems I have used allow you to email yourself the PDFs right from the DM machine.
They were not given flash drive files...they were given “copies.”
In fact the copies were then stamped with the date and the stamp of the registrar.
Got some actual evidence of that claim? So far everything I've seen claims that they flew somebody all the way out there in order to pick up supposedly certified hardcopies. To fly out the way out there just to copy to a flash drive something that could be sent electronically doesn't make practical sense, even for dumbocrats.