Having recently spoken with Trivium’s Matt Heafy and Corey Beaulieu, we hadn’t scheduled an interview with the band during our trip to scary Camden, NJ for this year’s Rockstar Mayhem Festival. But upon arriving we ran into Heafy in the lobby, and since he was between interviews at the moment we decided to roll the tape and do a quick impromptu update interview. And not for nothin’, Heafy’s such a nice guy, a great interviewee, and his band’s set was one of the most energetic of the day.Heafy to