TRAC works and works well!!

The rear end whipping around comes from the rear wheels locking, not the front. As long as the rear wheels continue to turn, they will supply directional stability. When the front wheels lock, a car will plow along mostly straight ahead. It was common for the rear to lock first because of the lack of weight in back, although, as you point out, an equalization system attempted to put most of the braking force up front. Ideally the front and rear would lock at exactly the same time.

Tom

 

I used to get those in my Jeep C-J5. I'd goose it around a snowy corner in 4 wheel drive and let it slide; ease off the gas and off she went. Once in awhile I would forget that I was in 2 wheel drive and bad things would happen. That short wheel base would spin very fast.

Tom