It's a huge problem in our industry. However I have yet to find a report of who this guy is and how he got his license.
Several times a year some foreigner would come running up to my truck "Please, please mister, you back in trailer. I know no how!" I would never do that of course, but in order to speed things up, I always ended up helping these vagrants.
As a very well experienced driver, I can tell you first hand many of these foreigners never took a CDL test in the US to drive here. They get some sort of reciprocity from their country where an equivalent of a CDL costs you five dollars and a pack of cigarettes. Here if you want any chance at passing our tests to get your Class A, brother you better know how to handle that vehicle.
So they stick these foreigners in these trucks, no experience, no training, some who can't even speak English yet alone read it, and expect them to safely pilot a potential 80,000 lbs vehicle. Pure stupidity.
I don't think he should go to prison, I think the bureaucrats that allowed him to drive in the first place belong in prison for life. I don't know because I can't find any details or testimony from this guy, but it sounds like he didn't know how to put the truck in gear while moving. Had he done that, he could have applied the engine brakes to slow that vehicle down. But you need the training and experience to do that. He probably didn't even know what engine brakes were.