This type of steel racking is fully interlocked, the pins are designed to hold weight, not be safety ripstops which wouldn't matter anyways in that sort of density. (In tree branch type, branches sometimes yield preventing this.) The squirrel cage barely imparted middle of a horizontal, caught a pallet and dragged it left to right into a vertical, rack torques, shit starts jumping and yielding... game over. Given the mass threw the truck into the opposing rack, seems safe to say they were beyond overloaded. Interlinks between rows were not present either. If overload... Rackmaker would point to their spec sheet, no claims there. Warehouser's insurance could deny claim on same grounds. Operator would win against employer. The legal result has to be on the net somewhere. Here's a less processed version... https://www.youtube.com/watch?v=XqmDRRZjaeU And an earthquake... https://www.youtube.com/watch?v=6HFp7ai0OBY