That's right the steering lock came on, they had been being towed for 10 miles or so with the keys in the ignition but the ignition wasn't on First time he used a serious amount of steering lock the lock came on and the rest is history

The reason it was being filmed was because Andy Forrest was over there mapping it, during mapping it damaged a big end shell which is why they were towing it, no idea why they thought the tow home was going to be interesting though