I guess backing up is not a requirement for CDL!

That's not a professional, That's a rookie who lost his composure. He was where he shouldn't have been and maybe turned one street too soon. Been there, done that! I'm guessing he don't drive for that company anymore! I feel his pain though. We have all been in a predicament a time or two. Its how you handle it that counts.
It looks like he had a left turn if he would have just backed up a little.