i know this sounds like a real bodge. If you can get someone to hold the wheel solid maybe bolted in the dropouts of an old frame. You will then needa sharp chisel make a shrp blow to make a groove in the lockring to help the chisel to grip. Then give sharp blows to try to turn it off. If it doesn't turn off you will eventually cut through the lockring. Be careful youdo not go too far and damage the hub threads. best of luck.
i know this sounds like a real bodge. If you can get someone to hold the wheel solid maybe bolted in the dropouts of an old frame. You will then needa sharp chisel make a shrp blow to make a groove in the lockring to help the chisel to grip. Then give sharp blows to try to turn it off. If it doesn't turn off you will eventually cut through the lockring. Be careful youdo not go too far and damage the hub threads. best of luck.