You wrote in response to Jim's question:-

[Jim] Are you saying that Rawat's affair with Monica and miscellaneous sexual experiences with other women over the years has been a matter of open, respectful mutual agreement between him and Marolyn?

If you know about it Jim, it can hardly be a secret.
Maybe Marolyn also knows about Monica?
Maybe she and Maharaji have actually come to an agreement?
It would certainly appear so.

The existence of Monica as Rawat's long time mistress was a secret until it was revealed by ex-premies. Certainly the few premies who knew about it kept it as a secret, as they tried to do with Rawat's drinking and abusive behaviour.

Regarding Marolyn, I understand she does know about Monica and does not like the situation. This is far from your description of their relationship as an 'open' marriage. Face it, you made that up, didn't you, to rationalise Rawat's behaviour. Why Marolyn stays now that the kids are adults is a mystery that perhaps Marolyn herself would like to explain one day.