How to get locking lugs off.

x2 on getting a pawn shop $1 deep socket that can be hammered over the lock lug.

doesn't even need to be 12 point

once it gets loose and unscrewed almost to the end you should be able to smack it at an almost 90* angle and knock it off.

kind of an art to get the right initial hammering to bite but not make it too difficult to smack off