Consensus is that the Starship was out gassing continuously in orbit and the thrusters weren’t able to control the roll rate.
Roll continued during re-entry and exceeded the ability of th3 flaps to correct until the vehicle broke up.
Reason for the oitgassing needs to be pinpointed and corrected and thruster design may need to be rethought, perhaps going back to hot thrusters.
https://forum.nasaspaceflight.com/in...opic=60479.440