I think most IT people would agree with the willful malfeasance and or gross negligence assessment. Trusting employees to print out email certainly wouldn't be my backup plan..
Turned out my question ended up getting the most incredulous answer one of the night. The commissioner said he did not know if they recovered her emails from the tapes or even if they tried. If they didn’t make an effort to restore her emails from the known good backup, it was because it is to complicated.