I dont really find this take very logical to be honest
let me explain....
In a corner all four tyres have a lateral force on them due to tyre slip angle. When the rear tyres break away the fronts still have that lateral force whereas the rears clearly dont (well they have less anyway). So in order to bring the car back to a non sliding state, that lateral force either needs to be regained at the rear or lost at the front, agreed?
Now this is where this technique confuses me.... clearly regaining grip at the rear isnt an option and as people have said the only thing left is steering. So in order to reduce grip at the front there are two options:
a) a normal counter steer technique - only a few degrees of steering in the opposite direction before the slip angle of the tyres is reduced sufficiently so that the lateral force from the front and rear tyres is balanced and grip regained.
b) the 'understeer' technique - turning the wheel further raises slip angle above what is optimum and therefore lateral force decreases and the tyres begin sliding. However, no matter how much steering input you apply and therefore however much the tyres are sliding, there will still be a lateral force keep the front end turning.
So WHY would you CHOOSE to turn the wheel a lot - say 180° minimum to achieve the same affect of turning the wheel maybe 5° or 10° maximum for ANY type of oversteer situation???
Now what happens if the rear has broken away big style. With a conventional technique you carrying on applying opposite lock in the direction you're already turning the wheel until there is little or quite probably no lateral force on the front tyres and the control is regained.
But with this understeer technique you cant do that. even if you apply full lock to give the front tyres the biggest slip angle possible and they are sliding across the road, they're STILL going to have a lateral force on them accelerating them towards the corner and that's not going to help regain control at the rear.
So what im saying is, although this technique does work (im certainly not arguing that), it requires far more effort and leaves nothing left to cope if the initial reaction doesnt generate suffcient understeer to cope with the oversteer!
But finally, talking of this being used in an LX6, there are some Caterhams that have been prepared for track day type instruction lessons where a brake pedal for the instructor has been installed. When the pupil loses loses control of the car (which is almost inevitable!!), the instructor simply stands on the brake pedal to lock up the front wheels in order to make sure the front slides instead of the whole car spinning! That would be an interesting one to test in LFS.