Glad you and your equipment are unharmed. Uncontrolled drifting on an open station is a sure way to get a good shot of adrenaline. Nothing like near death to make you feel alive. BTDT, donāt care to repeat.
Kind of hesitate to say this as I donāt want it to come off as criticism. I know you werenāt expecting any potential problems and that probably played into it. When the wheels have lost control, drop the implements; in this case, the rear blade. If you have to fix the road after, thatās a small price. Default āpanicā on a car/truck is usually hard braking. On a tractor with ground engaging implements, itās drop the implements.