I wouldn't have thought so. If you lock a spinning wheel, you send 100% of the torque to the other wheel whilst the locked one becomes a brake! Surely the better solution is to progressively reduce the speed of the piining one to gradually transfer increasing amounts of torque across the diff to the other one until they're both close to the same speed?Of course it does. A spinning wheel serves very little in the way of motive force, and none at all if the the wheel is in the air.
By locking the spinning wheel on say the front axle, then the differential sends power to the opposite wheel, which by the assumption that its not spinning, means it has some useful grip.
This process is repeated many times a second sending power back and forth across the axles, which means momentum can be maintained.
I know it has been said that the FL1 TC system can't stop a wheel and that it can only slow one down, but I'm still slightly curious about that. I think it's only more modern systems that can exert that degree of fine control over the braking. However, I don't know this for a fact.