It's nice you didn't have to go up on the rig.
I got stuck in a quarry once pulling a trailer with me. They told me to go down a road that was covered in washout from the rain the night before. The truck sunk up to the door jams and they had to pull me out with a 50' chain and a huge wheel loader. Luckily nothing was damaged just a few scratches on the bottom of the truck and a lot of washing out mud and gravel.