This was more to say "we're serious, and watch what happens if you are not as serious about it as we are"
It also screams "I'm a liability. If you don't do what I want I will hurt you, even if you've done nothing wrong." This applies to this situation but also in future situations.
charges against the employer for having such a person in their employ
That line is quite concerning. It literally means that perceived emotional harm isn't just the fault of the perpetrator but a liability on the employer. It's impossible to control other's actions and more importantly how those around them perceive them, so the only meaningful defense is to eliminate potential victims.
With your bare hands?!?