Drop it or moderators come in, and yes, he was trolling. His only response was an empty quote. Post-hunting is a form of trolling.
Sorry Sugar, but I think you're getting a bit paranoid.
If you've had investigated, you would noticed that the forum has by default disallowed multi-quoting (quoting a quote). He has quoted a post which was only a quote of congratulations (look whom he has quoted), and since quotes in quotes are dropped, he has nothing in his quote.