I've seen that type of thing before. Overtorque can twist a tube type prop shaft just like that.
The instance I saw was on an M151 jeep that the GI driving it kept in 4WD on dry pavement. Made about 50 miles into a convoy trip and it finally twisted up. Looked just like a noodle. We just took it off and he made the rest of the trip in front wheel drive.


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.