Yes, that was quite amazing. They were able to use differential thrust to produce some degree of control. Fortunately the control surfaces were trimmed for roughly level flight.
That's kind of like if all four of Starship's control surfaces became locked in a stable config and they had to use hot-gas thrusters for roll and pitch. Of course, it may have propellant reserve problems. It can land with extra reserves when carrying humans.
Starship will have completely, truly independent drive systems for each of the four control surfaces, so there is no such single failure mode.
Helicopters are much closer to Starship for this particular analogy. For a jetliner, the engines are independent of the glide mode; for a helicopter, the engine is the glide mode. If a helicopter lost hydraulic control of its main rotor it would be unable to autorotate.