adstudio,
I am sorry this guy had made your life rough, I am a NetAdmin and all that I have read appalls me, his actions are a serious security breach. I think it would be in your and your superiors best interest if you discuss this with you superiors. Consider if he has done this to you that he has probably has done this to others, probably your CEO, don’t you think that your CEO would be interested in what has happened. If I were you I would go directly to your CEO and speak only to your CEO. Seriously, think about the implications of what has happened, this guy feels he can get away with anything. If he feels vengeful he will probably do something to destroy any data on your network and that could have serious ramifications to the financial stability of your Organization.
