We had a driver a few weeks ago go do a switch. The shipper gave him his paperwork and said he was good to go. He dropped, hooked and headed back to the center. He never checked the door of the trailer. Come to find out they hadn't finished loading the trailer even though the person in the office said he was good to go. The shipper called our CCM on his cell phone at home to report what happened. Another driver took the trailer back so they could finish loading it. They had the first driver write a statement of what happened. He had a disagreement with a different customer so that's what his statement was about. He had no idea about pulling the partial trailer back to the center. The company took that as him lying, so he was suspended pending an investigation. Well 3 days later he was disqualified to be a driver for 3 years. He had a previous speeding ticket, so that and moving a trailer while in the process of being loaded got him disqualified. We had a preshift after this all happened and we learned that pulling a trailer out while being loaded or unloaded is just as severe as rolling your truck over. Seems a bit harsh, but I guess it is what it is.