Yup. Grind the rest of the pin off flush after you have the swing off, hit it square center with a punch (get it as darn near center as you can) and then drill it out being careful to be a square as you can. DON'T DRILL ALL THE WAY INTO THE STEERING COLUMN. If you chose to not remove your triple clamp be very careful to not get metal shavings in your column/lock. I bought a brass pin from my local hardware store (and a drill bit that I had them take a caliper to and measure for me) that was just barely larger then the drill bit and smaller then the original "swing" hole. Hammer the pin in and whalla. Actually ... you send me that lock and I will send you the bit and a new pin if you like. I will just have to find the bit. I must have it .... somewhere.
O, I meant to ask what year/model was it off of?
~
Montibank