This smells like bullshit. Investigations are not tied to the employment of the investigator. Plenty, and I mean PLENTY of investigations are completed and used to try innocent schmucks all the time after the cops or detective has been shitcanned for one misconduct or another.
Making them fire him would open up the administration to yet more misconduct to investigate. Quitting let’s them have what they want with no risk whatsoever and no challenge to their shakey authority in the matter.
It’s a limp waisted conclusion to this limp wristed farce of trying to use the justice system as intended against someone the justice system has been carefully sculpted and tended to protect.
As a welder, I’ve had a female coworker ONCE in 15 years working in the industry. My current work doesn’t even have a bathroom for women in the same building as most of the workers. If we did hire a female welder, she’d have to walk across the parking lot to the administration building to actually use a women’s bathroom.