I’m wondering if the remaining fuel in the lower segments of the ship gave those sections more momentum, causing the whole hull to pivot around those heavier sections (especially with the loss of thruster capability being discussed).

With the Space Shuttle, this tendency was largely offset by the delta wings also causing greatly increased drag at the rear of the hull, but with fins folded the Starship doesn’t really have this. That plus the seeming loss of control due to thruster malfunction…