Things used to be so much simpler when savegames were just a file, and not some hideously overcomplicated 47 layer cloud thing that doesn't have any options for managing it.
Just try to get Steam to show the conflict resolution dialog so you can tell it to overwrite the cloud saves with your local one.
I got it to show -once-, it still failed, and now I can't get it to show again or do anything but fail with no options presented.
Again this is caused by people trying to be too clever by half.
