It was a long night. The cargo truck behind my wrecker had buried itself past the headlights. Initially tried to pull him out with my rear 45k pound winch but the cable snapped, steel core was rusted badly (now has a replacement cable). So backed up to him, tried a few pulls with a strap that was not successful. My wrecker was only a few inches down into the mud/rocks so we setup all 4 outriggers, hooked up the crane, and lifted the front of the cargo truck out of the hole he was in and set it off to the side. During that lift the wrecker sunk down through the rock into the bottomless mud.
Had a large tracked skid steer come out, it sank trying to dig out around my wrecker. Called out a 18 wheeler wrecker and he ran a 4 line pull with his winches, was able to pull each vehicle out 1 at a time. My front winch is not usable right now until it gets some cable.
I tend to avoid mud because of situations like this, normally I'm the one having to pull others out.