Sorry to hear that.
Truckers who haul pipe should be given some specific training, so they would have less of a chance of doing something STUPID.
About 10 years ago, I was unloading a load of 12" mortar lined steel pipe. Each of the four layers was cribbed up and chained separately. I was in a 20 ton RT crane positioned to the left side of the truck, and was unloading one piece at a time with a pipe clamp.
I had two pieces to go on the top lift, and when I picked up the one I had, the last one on the upper layer rolled to the right. I tried to block it with the piece I was carrying, and the next thing I see is the next layer down all the pipe is rolling right. As it starts rolling off of the truck, I see the driver RUN out from under the trailer, get hit by a piece, and go down as 4 or 5 pieces of pipe rolled off the truck to the ground. He was very lucky that the first piece hit him hard enough to knock him out of the path of the rest of it, and he was just beat up.
I nearly had heart failure, thinking he was dead, and set a record dismounting the crane to race around to help.
The driver had walked around the blind side of the truck, away from me and the helpers, and started unchaining the layer of pipe UNDER the one I was picking. When he popped the last binder, the load shifted, and started rolling. I could not believe it. He said he was in a hurry, and wanted to get a head start on the next layer. Figured it would not hurt. WRONG, and it nearly killed him.