WHEN A FILM archivist approached Chapman and Maclain Way with over 300 hours of vintage footage of the Rajneesh cult, the documentarian brothers weren’t sure what to do with it. And then they popped in the first Betamax tape. “It was absolutely stunning visually,” said Maclain Way. The footage showed over 10,000 Sannyasins (as the group’s zealots were known) dancing and frolicking in rural Oregon during the cult’s 1983 World Festival. Particularly remarkable? Each follower of the guru Bhagwan Shree Rajneesh was clad from head to toe in shades of red, orange and violet. The Ways were sold: Over the next few years they...