Wrestling With The Truth
Judging by some of the excerpts you'll find, as well as comments by Kurt Angle, Chris Jericho, Mick Foley and The Rock, this actually looks very, very good.
He's still with the WWE, so I guess being a backstage guy doesn't mean they'll promote your merch for you, so this is independent.
I don't know if it'll be as traumatic an experience as "Ring of Hell"...