Had to dig through Planet archives to find this one, 4+ years ago! This is my broken bit next the amigo broken bit. Different after market brands, same failure in the same fashion. I was creepy crawling up a ledge, no spinning tires and "BINK", I knew instantly what it was. Unfortunately it blew the guts out of the superwinch hub Superwinch sent me two brand new ones after I sent them back the broken one Looks like the failure point was just inside where the CV joint comes out of the actual hub assembly. Looks like it wanted to twist with the torque and the cast garbage just failed with a twisting shear.
This is why I stockpile OEM CVs. I have a few sets in the shed, some from VXs some from troopers. Just swap the ball/cage assembly to the trooper CV and it works on the VX