Dennis, I'm only 1.5 minutes into the video & feel the need to stop it & give some advice. Your truck has an auto trans. One thing that about driving ANYTHING with an auto trans that's not mentioned nearly enough, if ever: If you find yourself in
ANY slippery conditions with a vehicle with an auto trans, shift the trans into NEUTRAL when you go for the brake pedal!!!!! This will stop the rear wheels from pushing the locked front wheels. The same applies for front wheel drive! It's a tip I picked up many, MANY, years ago & has served me well. Second, it seems there's something contaminating the rear brake pads. Shouldn't be gear oil as a dually has what's called a "floating rear" so that only leaves brake fluid leaking from a wheel cylinder, or water getting in due to a shield missing on the backing plates, or the automatic adjusters aren't working properly. In any event, you should pull both rear brake drums, repack the wheel bearings, inspect (by pulling the outer seal away & looking for fluid) or replace the wheel cylinders. If the shoes are contaminated with brake fluid, replace them too! Lightly lube the adjuster between the shoes (screw the adjuster apart, clean & LIGHTLY lube them, they are left-hand thread on left side, right-hand thread on right side) & inspect EVERYTHING inside there.
Glad to see you got out with minimal collateral damage!
Ummm... Why is the red BRAKE light on the dash lit?

LOL