The news was confirmed by Cantrell himself, who shared a screenshot of his appearance on Instagram:
Snuck into a shot or two in the Deadwood movie courtesy of W. Earl Brown. Standing next to Garret Dillahunt here. I am a huge fan of the show and have become good friends with Earl and Robin Weigert over the poker table and other shenanigans . I gave Ian McShane a vinyl copy of Rainier Fog that day too .Was fun to be in the background watching the professionals do their thing. Check it out cocksuckers ! @wearlbrown @robinweigert @garretdillahunt #deadwood themovie #hbo #rainierfog
Deadwood: The Movie can now be streamed via Crave. In the words of Jerry Cantrell himself, "Check it out cocksuckers!"