Is it possible to get a replacement steerer tube put on a fork?
Most companies can do it for you. They will probably charge you around $80 - $100 to replace a pressed steerer tube.
I may be fat but I'm slow enough to make up for it.Colnago CX-1Fuji SL1 buildBMC Time Machine TM01Focus Mares CX
Can I get it done at my lbs?
I doubt it. They would probably have to send your fork back to the manufacturer the same way you would.