Thanks..I have loader on it so I will give that a shot. I know exactly the area you are talking about around the greenbelt, we used to live over there a few years back. Great story as JC said.
jtaubrey, welcome to TBN. JC surely has a nice page out of the manual. The operation of that lever seems counter-intuitive. I suspect that when you tried to push it down, you were disengaging the 4wd and could not due to driveline windup. It's pretty common. Sometimes you can drive slowly forward while moving the steering back and forth to relieve the windup. Many of us with loaders just raise the front wheels and that relieves any torsional windup pressure. In the worse case scenario, you might jack up you front end to get the weight off the wheels. After you get it to shift out, shifting in/out several times may loosen everything up, but windup is common even on newer tractors with mechanical gear engagement of 4wd.
BTW: My dad used to sell lots and lots of insurance around Aubrey back in the '50s and '60s. He had an agency in Denton. If you are around a bunch of old Aubrey old-timers, ask if anyone knows Johnny Bean. He was a Native American who lived in an old 1-room shack down on Elm Fork Creek just off the old Hwy 428 bridge. It's about where the Greenbelt hiking area is. He had a brother who was married and lived in Aubrey, but Johnny never married and lived in that shack until he was forced to move. He could entertain himself for hours by stirring up a wasp nest and then using a single stick to swat wasps out of the air. He was so good at it that he rarely missed and I never saw him get stung.