I found a method that worked well for me. I found a socket that barely fit over the lock, then made a shim out of a piece of steel trapping I had, maybe ~.050 thick, 1" long and 3/8" wide, I hammered on the socket with the strapping between the lugnut and the socket... then took them right off.
I did this on the 2 lugnuts that I could not get off after trying vise grips, hammering on a tight socket, etc. this was very easy and fast.