The locking rings are very hard to remove. On the SB web site they show a pick being used the "flick" them off. I made a couple of little pry bars out of music wire (heated red hot and hammered the ends to shape) to get a few off.
I heard from a good source that paint shops just break them off and use new ones. I have been using an o-ring to keep the sockets in place. Honestly, I don't know why the ring wouldn't be ok for life.
Sorry, no magic, they are a fundamental pain.