Nice you got out

, paying to much but getting stuck gives a good rush aint it

My sway-bar got pulled from the diff (just bend back but rubber was gone) when a friend (free

) pulled me out so I think you need to pressure wash the diff and check the axle gear for damage and get the wheels off to clean some more.
Clean inside chassis with pressure sewer cleaning nozzle.
You got it so deep it was one big anchor so I think lifting it was the first thing to do.
Never more throttle when it starts to sink: very unlogic when in the car (been there) but I have sunk to many times where stopping earlier would have made it far easier to get out.
A high lift is very handy but tilts sideways when you get to high up (but might manage to let it fall (without damage...) next to the wheel hole)
An airlift would have been handy but any sharp object can puncture it, and in this situation you would have to dig a hole for it first.
Shovel to get all that sand out of the way (but under the diff remains) and throw a spare tire under one wheel so that is at least one wheel that wont sink, three to go...
some three stumps work fine for me, but not old trees as they just turn to splinters.
A winch is most easy (and dangerous), hook to a ground anchor if no tree and pull forward, but big chance the anchor moves to the car in your situation, or use a spare tire as anchor.
Biggest problem is when almost done with all the work and then get in and be back to zero within a few seconds of throttle, so to me it is: do it properly and check to make sure the next try is the final one.
My situation was to dangerous, my friend insisted I was not getting the hi-lift and stuff out and let the car fall on me in the water:
Nothing a Deutz cant handle: