That's one of the main points of the new subreddit I've linked to. From the original thread:

  >> We just need the savegame...
  > (original author) I'll upload it this evening when I get home

So we just have to wait.

The top post of the top thread in r/theeternalwar say he's working on exporting it for everyone.

The game is easy and boring in the end. He's purposely letting it go on and on.

read through the thread; it's anything but easy. he's hit the point where the ai civs have decided nuclear war is the way to go, and he's reaping the global penalties for it (radioactive wastelands, global warming) while simultaneously having to divert all his resources to maintaining the red queen race of building tanks and having them destroyed rather than cleaning up his farmlands to grow food.

I blew away an unfortunately portion of my youth playing this game. When everyone has all the techs, the human wins, very easily.

so did i, but i pretty much always eliminated everyone else early on, or went for the alpha centauri victory. never tried playing out the total war scenario with balanced empires and nuclear weapons. but from the op, the problem is not winning from a clean state, it's that he's gotten himself into a bad situation and needs to get out.