DPT and the Temple of True Inner Light

[transit]

In Tihkal, Shulgin, in his discussion of DPT, wrote:

There is a rather remarkable religious group known as the Temple of the True Inner Light, in New York City, which has embraced as its
Eucharist DPT which they refer to as a powerful Angel of the Host. Their communion is confirmed by either the smoking or the drinking of the sacrament, and they have been totally unbothered by any agency of the Federal Government, as far as I know. It is not as if they were unknown. Quite on the contrary, I had on one occasion received a request for information on the drug from a reporter who was writing a story on DPT and its use in the church. I asked him just how he had gotten my name, and he told me that he was given it by someone within the DEA.

Does anybody have experience or knowledge of the temple, in particular about their use of DPT. It would be particularly interesting to know whether they use DPT HCl or DPT freebase, what their method of use is, and their dosages.