Sinking Feeling - Part 2

(part 1 here)
I mean - there's stuck... and then there's really stuck... and then there's the state my cousin once used to describe 4 wheel drive - "A technology that enables a person to get so far from civilization that the hole they get themselves stuck in hasn't even been discovered yet". And boy - ohh boy - did I manage a great stuck here!
As the picture indicates there was a "little bit" of tire spinning - but this was in the context of trying to get a grip on boards, rocks, small buildings - anything we could throw into these holes... the very holes that were filling with water as this experience drew on and would periodically bubble as the tractor shifted and sank further into the abyss. So - after an independent struggle - I decided that the strip of undisturbed dry ground leading up to the tractor would be the perfect venue for the 4 wheel drive truck to back up, hook on, and easily pull me out of this mess... (did you read what I wrote about 4 wheel drive as a technology)?

Getting the truck to the tractor was easy... Getting the tow strap on the truck was simple... getting the strap attached to the slowly sinking tractor was cake... There are benefits of a small tractor - like getting it unstuck with just a simple tow.
Kelli was on the tractor - I hopped in the truck cab. Gently moved forward until the strap was tight. Gave a yell - all was ready. Gently pressed on the accelerator... Felt a tire ever so slightly spin and immediately took my foot off the gas... something didn't seem right... the front right corner of the truck, it, must have been adrenaline I thought... no - there it is again. I hopped out of the cab and ran around the front to the passenger side and watched in horror and the front tire that spun slowly - almost imperceptibly - was sinking into the mud!
I can commend Kelli and I at this point in the story for acting swiftly and acquiring several varying sized boards and blocks from the barn and bracing the sinking truck now that the front frame was a mere few inches from ground contact... buying us precious time... to figure out... NOW WHAT?!