Had the disco sliding backwards down a slipperier-than-expected slope today after a failed ascent. I'm guessing that once all 4 wheels are locked, it thinks it's staionary. Probably the correct course of action is to come off the brakes and re-apply, but that takes some nerve...
Assuming that the ABS works in reverse. Does anyone know if ABS/HDC work in reverse?
In this case, there wasn't any real risk, as the slope is only short and levels out a bit lower down, and once it stopped sliding engaging low reverse allowed of a dignified recovery. Didn't stop the momentary feeling of "oh f*ck" though.