Very interesting, and definitely a rare one. However I dont really buy the whole fan stopping theory. Because of the pitch of the blades air blowing through the fan would cause it to turn faster, not slower. Remember the fan is designed to suck air through the radiator, the same direction that headwind was pushing it. My best guess? Dunno why but the fan came loose and hacked up all the hoses and belts and such, you lost enough fluid that the temp sensor was in the air and not getting a good reading and you overheated it. Thats just my theory, but it still doesn't explain how the fan clutch broke. Overspinning maybe?

Dallas