It happens every so often. There is a certain variety of troll that resurrect old stories (at least 2-3 years), claim to be related to the subject of the story and then basically call us “haters.”
It used to happen so frequently that we actually had the “Obligatory Insider Ping List” for those threads.
Around the election I had a weird experience with a lurking Obama troll and had to get the mods and JimRob involved.
That's happened to me, on a thread I posted at least a year earlier.