Yeah, I should have thought to check simple stuff like this before pulling my entire diff apart but oh well.Glad you caught it!
I had the same thing happen on mine that I found after a couple test runs following the lift install:
View attachment 578618
Good lesson to learn when it happens and everything ended up safely at home. Double check the lock rings...
Did you end up buying the RJ tool to press the joint together for the snap ring or did you rig it up some other way?