I've done something similar... not with wood though... that's a pretty heavy duty skid loader and unless he only had the load way out on the end of the blades where the balance is off, that loader should have handled anything short of a major log.
My partner and I were loading a 10,000 lb butterfly valve into a box in our warehouse once... we only had a 2,000 lbs and a 7,000 lbs lift... we tried to pick the valve up on either side with the two lifts... when we started lowering, the 7,000 pounder got ahead of me on the 2000 pounder.... my lift tilted and lifted about 2 ft off the floor, then the blades slipped and dropped the lift back on the drive wheels.... the tires were hard rubber... no give... and I almost broke my neck from the snap when it hit the ground... not very smart of two old hands at handling cargo.