Last weekend I blew out a couple of Arduino Nanos while working on a project. At first I tossed them in the trash, but then I thought better of it. I ordered a few ATMega328 in the QFP package and was successful in fixing the nanos at a cost of about $3.50 each and about 10 minutes.
First, I put the board on a firm surface and used a box cutter knife to cut the leads close to the package (since I don't have a hot air rework station yet):
It works just fine.