Facts are stubborn things…
See this video [minute 48:52-49:00], including the personal, recorded testimony of Rabbi Gershon Bess of L.A. and a clear photo, no need for the close-up (Raavad\Chinuch I think).
All I’ve ever heard in response are mealy-mouthed, or speculative non-denials.
Of course, it appears Rabbi Sheinberg was still far from being a convinced, let alone a vocal supporter of murex Techeiles. Still, unless we are to presume malicious monkey-business, the facts are in: to the many pairs of Titzis worn by Rabbi Scheinberg he also added one of Techeiles.
(Visuals aside, I can’t recommend the rest of the video, containing inaccurate claims on both sides.)