(I imagine VXs have drive flanges as well.)
They do.

So if manual hubs were installed ???
Then you can manually turn off the wheels only, the CV's are still under power, but not under load. Whatever the TOD sends up front is then just wasted energy. I have manual hubs and when I ran unlocked I wasn't pleased. The VX lacked it's usual get up and go mojo. The hubs do have good uses, but as far as running unlocked for reasons other than pulling donuts or a broken CV, I wouldn't recommend them.