Early on there was a thread on one of these diesel forums ,where that drag link came undone, and the steering was lost , I believe the one I saw was when they were actually pulling into a driveway , and it come apart when turning sharp ,they got lucky . There were pictures posted .
that is quite possible.. there are only 2 things that absolutely have to function on a vehicle for a person to bring it safely to a stop , the steering and the brakes. everything else that has issues is generally an inconvenience..
We broke a drag link at my job on a Ram 5500... but the bonehead driving hit a curb at hi speed so hard the steering wasn't the only thing affected when he crashed the truck...