I found them to be suspiciously short
No but really it appears to have just pulled apart for the most part. The outer CV joint appeared to be riding on the very outside of the joint from the wear I can see and the combination of a heavy load with an uphill right hand turn pushed it to the limit. You can see 2 spots where the metal gave way when it finally let go and pulled apart on the outer portion of the CV joint. The cage itself it still fully intact although it does have a crack that I can see but I think that was not the cause of it.
I think I have a solution though which for testing purposes will be fine and could be a permanent solution. Hopefully a spacer on the transmission side will be all that it needs so I'm going to get my CNC guy to make some up then will need to get some longer bolts. I'll start with 1/4" and will get a 1/2" one made as well.
I've got everything I need to rebuild my factory axles now although I'm in no hurry until I can get this damn check engine light sorted out, technically the tag is expired now so I need to find some one who can turn the idle down on it but so far no luck
Threaded Mode
