The professor needs to be fired.
Professor issued apology, but student is considering legal action
So what was the reasoning the prof used to insist the kid move closer? Might be nice to hear both sides of the story. And to have this immediately jump to 'calling security' - what is missing here, on both sides of the incident?
Don't do as you're told get big lawsuit money.
Keep rewarding bad behavior and bad behavior never ends.
Don't do as your told get big lawsuit money.