I managed to spin an 4 ton truck (military fuels vehicle) on the M6 once.
Purely my fault. We had been warned that the interlocks that activate the brakes if the hoses are removed were very ‘iffy’ and consequently we had to be very sure that the hoses were secured, a combination of tiredness and end of exercise rush clouded my judgement. Just north of Lancaster coming south for Stafford one of the hoses bounced in its tray sucificiantly to activate the air brakes and before you knew it I was facing the wrong way (we had spun around to face the outside lane) and sitting next to a passenger who was more terrified than I was which was a lot.
Luckily it was early hours, the motorway was pretty empty and being the rear vehicle in the convoy there was no one close enough to not be able to take avoiding action. As soon as the vehicle had stopped and the hose settled again the air brakes released and I reversed the vehicle onto the hard shoulder. I then jumped out and checked the vehicle for any obvious damage, double checked the hoses again, got back in the cab and completely froze for about 10 minutes.
Once I had pulled myself together we set off after the convoy who were unaware of what happened (great convoy discipline there chaps) though I fessed up once we were safely back at Stafford.
As a result of that incident the interlocks across the entire fleet were replaced so they were less ‘iffy’ and I learnt a new found respect of the humble ration pack standard biscuit brown for its ability to stop you sh!tting yourself.