You say this person's colleagues have become apprehensive. Are they outright scared? As the boss, you have the ability to fire this person, or order them off t

You say this person's colleagues have become apprehensive. Are they outright scared? As the boss, you have the ability to fire this person, or order them off the premises at any moment. You're also more able to remove yourself from the office if you feel uncomfortable. Your other workers don't have this agency. They have to show up and work alongside somebody who can't control themselves and has violent outbursts. Liability concerns aside (IANAL) I think you should be proud of what you've tried to do, and accomplished so far. If everyone involved is a tight knit group and you're comfortable that they're aligned with the ongoing risk/altruism tradeoff, that's one thing. If not... please consider that you are signing other, less powerful people up for the downsides of this situation.