I'm researching self development / self discovery seminars / worlshops and/or retreats under the loose term 'tantra.'
But about 99% of these are based on the teachings, rituals and practices of Rajneesh / Osho - so I guess he must be a highly respected Indian master on the subject.
However when I've emailed the organisations about this, none have bothered to explain why.
Then other common factor seems to be that everyone involved has an Indian pseudo-name. This makes it difficult to find out who the people really are. They don't seem to want to use their western names.
What have they got to hide? And why the focus on Osho's teachings?
Isn't 'tantra' a wider subject than the teaching of just one guru?
tantra just means "technology", and as such there are several spiritual technologies employed by the diverse body of spiritual practices we call hinduism, and they call the sanatana dharma
there are two forms of tantra - the left handed path and the right handed path
the right handed path is ashtanga yoga, observing the rules established by patanjali - it is socially conservative and is said to shelter the aspirant from spiritual harm
the left handed path is socially uncoventional (by traditional indian standards), and incorporates the five 'm's into its practice: mamsa (meat), madhya (wine), mamsa (flesh), matsya (fish) and maithuna (intercourse) - it is said to be a much faster path to spiritual enlightenment but opens up the aspirant to very negative energies if not applied with extreme disipline - the aghori tradition is an example of this
as far as osho - he was a man of some spiritual ability that capitulated to his own ego, thereby negating any benefit he had, and in the end died in a drugged stupor surrounded by foolish and immature disciples
the reason why disciples changed their name is just a facet of normal hindu practiced, just like they do in other religions such as judaism - essentially they become "reborn" into a new tradition - in osho's case however, it was hardly legit, and very few indian hindus have much respect for osho, or for that matter mahesh (maharishi)