Brake fluid leak causes all four brakes to fail after driving with the emergency brakes engaged?

Yeah, I agree it is probably the wheel cylinder having been pressurized all that time. I do not have access to the car where I left it at the travel center last night (Saturday) and today is Sunday. I will go back and replace the cylinder on the spot (hopefully nothing is seized or damaged besides the cylinder and hope the drum and parts aren't stuck together). I attached a video clip of what I saw immediately after stopping.

I am curious as to whether I could use a spreader to spread the brake shoes apart instead of removing them in the middle of nowhere. If yes, provide me a link as to where I could buy them from. I appreciate your help.

Today, I was told I could access the adjuster by removing the rear grommet, then inserting a flathead screwdriver and rotating the adjuster wheel until the brake shoes move away from the drum. This makes removing the drum easier. Once the wheel cylinder is accessible, the opposite should be done (moving the shoes away from the cylinder) to make it easier to remove the wheel cylinder without having to remove the shoes. Please, let me know if that is something I should try. I am going back up tomorrow to replace it and bring back the car.

HI, I left (at about 12 noon) before reading your response (8:11pm). When I got there, I removed the drum. The brake shoe pads were paper-thin and crusted (fell apart as I was removing the drum. After removing the cap, the cotter pin, the locknut, the drum came out without prying on it more than once. The washer and outer bearings fell out of the center of the drum (I did not get a chance to look at how they were inserted or positioned and thought it would not be a problem putting it back together). Inner seal and bearing remained intact within the drum. What's more, the brake shoes backings were incredibly loose, moved up and down and side-ways at will. I removed the wheel cylinder with no problem. No rubber covers on either side to be found (they were both gone and oil soaked every part of the brake system). I ordered the hardware kit. I had a new wheel cylinder (but no good without replacing everything else) and ordered the new shoes (they will be here tomorrow). I needed to bring the car back to North Carolina, so I got me a 10mm fitting with an adapter cap and capped off the brake line after bleeding the brakes. It worked! I got front brakes. Putting the drum back on was something else. For some reason I could not figure out how the outer bearing and washer went into the drum (don't ask me why I could not figure out such a simple task). I tried different ways of installing them, but the drum refused to seat all the way in. The outer locknut after rotating it would end up sitting on top of the cotter pin hole. I spent two hours in 25-degree temperature trying. Finally, I decide to install everything as best as I thought would be possible and mounted the wheel and tire and drove it may be 10 miles at 25 miles per hour: the wheel was making noise, something was not seated right. Next exit: dismounted everything and took off the drum again. 18 Wheelers and their drivers everywhere around me. This guy crosses my path and says "I almost ran you down with your little ford at 25 mph." I told him what the problem was. He kneeled next to me and said" "hold on." He went to his truck and got a metal file and a flashlight. He filed down the steel shaft without touching the threads, I was like "why are you doing this?" He said: "you almost ruined the shaft" because the outer bearing was installed in reverse (the tapered end was installed outwardly). I told him, I really tried to do it correctly, but it did not want to go in that position. He said: "I put the washer first instead of last." A socket pressed against the bearing after filing the shaft, a couple of strikes with a hammer and in it went! (Which made the drum seat perfectly). I installed the wheel and tire and drove off at speed limit. I saw your instructions when I got home at 2 am. Your instructions show the correct order of installation. I definitely needed to know that the tapered end had to be driven and goes in first followed by the washer. Intuitively, I knew that, and it would have worked if I had driven the outer bearing with the back of a socket. Anyway, I will replace the brakes when I get the parts.

Here is what it looked like and how I capped off the brake line.

Here are more images.