The bands have never officially condemned it. In a 2012 interview, Anthrax’s Scott Ian was asked about the rampant piracy of the Sofia show. He laughed. "You know how many kids in South America and Asia have told me they became guitar players because of that bootleg? The record company sees lost sales. I see a future audience."
The answer is .
Then, the internet did what the internet does. It stole it. The official “Big 4” DVD/Blu-ray— The Big 4: Live from Sofia, Bulgaria —was released in October 2010. It was a beautiful package. Directed by Nick Wickham, it featured crystal-clear multi-camera angles, pristine audio mixed by the legendary Greg Fidelman, and bonus content.