Other than idiots in charge of jacks, no idea dude!! I've seen plenty of bent track control arms due to the afore mentioned jack operators!!
It is proper weird the angle of impact would suggest the force came up from 45 degrees rearwards, like running over a seesaw?
I've had 3 like that. Couldn't work it out. Then realised it was the guy doing my towing, using it to strap the bus down to the tow bed
It's been groaning since I had the van. 2 x MoTs and a load of work done by different people (including @Paul Weeding last year) and finally someone works out what the problem is