hahaha
buy a new resistor first. there's no point salvaging that one.. it's not expensive.. don't buy just 1, buy like 20, they're probably a few cents each.
Remove solder from the pad.. you can do this with a cutip as it's heated by the iron, because it's not alot of solder where you need a sucker.
Then tin just 1 side of the pad..
get a firm hold on a resistor using a tweezer, and slide it into position right before the tinned pad, then heat the tinned pad, and push it the rest of the distance inward..
NOW... the other side, you'd want to just tin the tip of the iron, remember it just needs to be a SPECK, an tiny bit of solder.. touch that to the other side of the resistor and you're done.
DON"T hold the iron against it for too long.. design is usually 3 seconds max..
Then