When we were building the house the guy delivered the engineered lumber for the floor joists. Where they wanted to put them was a bit wet (Dec. 30 his last delivery on the last day before a long weekend). I told him, if he started to spin, stop and drop the load. He didn't listen. Tried to see how far he could make it. Ended up burying both sets of tandems on that Freightliner. He thought he would be smart and drop the load. Well, problem was, it slid, but not off the truck. Weight was still on the truck, but he couldn't get the bed back down because of the weight of the wood. Not wanting to wait for a tow truck or pay for one (either of us), we decided to try to pull it out with my truck. A '99 Silverado 4x4 ECSB, with a rear locker. I put a chain around my hitch and put it in 4-lo. Ended up spinning all 4 tires and took a couple of shots, but I finally got him out. The guys there doing the framing stood there in awe. They couldn't believe that 1/2 ton Chevy pulled that truck out. The truck driver was glad because he was an hour away from the shop and wanted to get home.