A little late, but here's my story.
We )me, my friend, his girlfriend, and her sister) went offroading one night at 9:30 p.m. to "break in" my offroad lights, me in lead (his words - "You lead, that way I can pull you out when you do something stupid, haha.") with my buddy's F-250 light duty (read - F-150 with 250 axles). Now, mines a 90 Bronco with an auto'd 5.0, 4wd obviously, and his is a 2wd 89 250 with the manual 4.9. The trails are pretty tame, at least the sections we were taking that night. We made our way in no problems, and came to sandy area about the size of a baseball diamond on the side of the trail. My hubs were locked but in 2 hi, and as soon as I hit the pit my back wheels bit and spun. Popped it into 4 hi and climbed right out, no worries. I made it all the way around the pit and came to a stop facing the trail the way we had come in, just off the side of the trail. We got out and decided that was enought, we were done for the night. Now, I expected him to k turn on the trail and let me pass him and get out. No. He decides to try and take the pit. Now, I give him credit. He made it about 7/8ths the way around, getting stuck and rocking it back and forth a few times. But then suddenly his OPEN DIFFERENTIAL rear end stopped biting. He got his rear diff and spare tire caught on sand and his only spinning tire dug a nice trench. He has no winch point on the front end, so towing him out was out of the question. Couldn't push him. So we did what was needed. We put the females in my truck, kept them warm, and we proceded to dig for about an hour until they came back out to help. So for a total of 2 hours, we dug the dirt away from the diff, while knocking off the spare tire, saving us from having to dig that out. We finally got enough dirt away, jacked the rear end up, put some 2x4 planks under the tire, said to **** with it, and yanked him out on the front bumper. So, 4 totally filthy people 2 hours later, we're finally going home. Oh, and not to mention, I'm the only one who had work the next day at 7 a.m. Yay for a quick shower and passing out for 4 hours.
Lesson learned - never take a 2x4 offroading.