Here’s Ron’s statement regarding this doc:

Some more background info about the documentary: We filmed it over the course of about three years and it was a personal passion project of Cullen. Cullen had previously done some fine documentaries on subjects that i felt were great and he did a good job at staying unbiased while telling stories as they are without putting a spin or judgement on the content. I haven’t yet seen this documentary that will be released in a few weeks, but I know that Cullen is probably one of the only filmmakers in the world who can tell the real story in a fair way and make it work. Just for disclosure, i was not paid to be interviewed or give my likeness to the documentary. I participated because i felt Cullen to be the most capable person to tell this story. Also the fact that HBO is publishing this documentary is news to me. While filming i just knew it as Cullens personal project. If i had to guess, i would say that he likely got sponsored by HBO at a late stage when everything was almost finished.

From Ron’s Telegram