Meaby there is no need to panic. Your other posts seem fine and he might be just targetting this one because it was about him. Make sure you are chosing carefully your next steps and in Belgium we say: An avoided fight is winning that fight. I would really find it to bad for you that your reputationscore would be to 0 and that you would need to start over with another account while you are sooo doing your best on steemit and tons of people like you and are following you for the content you bring. Stay positive. Dont provoce. This might blew over. Just do what you do best and you'll be fine!