This article has been updated.

Pop Goes The News — Twisted Sister’s concert last month at Quebec’s Amnesia Rockfest is one the 80s rock band would like to forget.

In a blog post (Update: it was deleted shortly after this article was posted) on the group’s official website, a tour assistant known as Armadillo Terry slammed the music festival in Montebello, about an hour east of Ottawa. This year’s event ran from June 23 to 26.