What I do( this works 80% of the time) is cut out the snare in the sample. Go to a portion of the sample where there is minimal or no drum work. Then sample that portion and drop in the empty snare spot.
If you can sometimes you can just cut out the drums. It won't always be smooth but from time to time you can cut out the snare and piece the sample together. You can also replace it (like Joe said) with an earlier cut