I think it's funny that you're questioning whether or not your employer had a right to fire you! You used your position as a nurse to threaten someone with their personal medical info. That is WRONG! I wonder what you would do if you got angry with the immuno-compromised confused pt who just spilt water on you? Would you go running down the hallway yelling to everyone that he was HIV+? You should consider yourself lucky that you still have a nursing license!!