We did this one a week or so ago. Driver loss it one the turn.
We worked with Collettes to right the unit. Not to bad of a job Just the car lean up
At least the trailer had sides on it. I see them rolling down the highway all the time here on flatbeds stacked 3 or 4 high with just a couple chains over each stack.
Nice recovery! 
Thanks for the pics.
At least everything stayed in one spot!!!
that looks fun, i hope i get to do some stuff like that in the future