I have not seen much to recommend their program. Some examples are equipment requirements like dual bungied wings with the second inflater disconnected and bungied behind the divers right shoulder.
The equipment list for DSAT was published in Undersea Journal 2002 (3rd quarter IIRC)
I have seen no amendment to that equipment list since. I am not a DSAT instructor so I may have missed a training bulletin on the subject.
Can't speak for 2002, but I took the DSAT Tec Deep course last year, with the most recent materials, and there was no mention whatsoever on the equipment list of any requirement for bungied wings or redundant bladder/inflater.
There was discussion of these things in the body of the book in the section where gear was discussed - simply in terms of citing the range of available gear configs, with appropriate pro's and con's of such items...was a fairly balanced presentation, and could in no way be misconstrued as a "requirement" or specific recommendation.