. . attempt a U turn. Every picture tells a story and that's especially helpful here because there's no story with the pictures. Lot's of companies don't want their drivers doing U turns. This is why:

Tractor-trailer stuck between power poles - Times Union

at least he stopped!

I see nothing that indicates the driver did a Uturn at all, in fact if u actually look at the pics it is clear he was not. In pic 5 he is backed against 2 poles. i bet he had to back out of a business and could not pull up the hill but rolled back for some reason. He did the right thing and called for help rather than trying again and again and knocking the poles down.