Wallis, on the haṭha-yoga sources: the practice in every modern studio — the chakras, the channels, the kuṇḍalinī, the whole subtle-body apparatus that makes yoga yoga — descends from Śaiva Tantra, not from Patañjali. And yet many classes open with a chant to Patañjali, and "there are only two sentences on posture in the entire Yoga-sūtra." The text claimed as the founding scripture of postural yoga has essentially nothing to say about postures. The real grandfather (Gorakṣa → Matsyendra → Tantra) is the transgressive, goddess-worshipping, kuṇḍalinī-raising tradition that modern yoga spent a century distancing itself from. So twenty million people are doing Tantra while being taught, and believing, that they're doing something safely else.
Extends The Tantrik Roots of Haṭha-Yoga and Modern Postural Yoga and Krishnamacharya. Pulls against the studio-Patañjali story. Connects across domains to invented-genealogy and origin-laundering (history/business): the prestige-ancestor swapped in for the real one. The vault's White/Samuel material on modern haṭha-as-reconstruction is the corroborating critical-historical layer.
Essay seed: "The Wrong Grandfather" — a piece for the yoga-practitioner audience arguing that the practice they love is Tantra in disguise, tracing the laundered lineage, and asking what's lost (and what could be recovered) by reclaiming the real source. The audience would resist it precisely because the disavowal is load-bearing for yoga's respectability.
[ ] A second source independently traces the modern-yoga-from-Tantra lineage (Singleton, Mallinson — already cited by Wallis) [ ] Has survived two sessions without weakening [ ] The second wire (motivated disavowal) holds up against the simpler "honest mistake" reading