I was definitely not in a position to swap the brakes. No tools. No replacement parts. I ended up dialing back the clock gear. Used 4L to get from ice packed remote location to clear highway. (I was skiing, but not the kind with lifts and tourists.) Now am home safe and sound. Although I have a replacement kit for the drum brakes here, when I got under the truck to adjust the drum it was clear there was axle seal failure creating the situation, so I’m going to take her in to a good local mechanic and pay $$ to have it done for me.

Thanks to everyone for the fast and informed guidance. I actually concocted a clamp to pinch the brake line out of a few bolts and miscellaneous metal parts but decided to try the drum adjustment first.

The rear wheel was still locking but was easier to break free in 4h by popping the clutch (manual tranny) after the drum was loosened to the max. I figured if it got locked and I was sliding I could break it loose in time to recover. Probably false bravado, but I made it home alive without having to test my stunt driver skills. [emoji15]