Sometimes removing small, fine, and/or delicate parts from a sprue can be disastrous. Using clipper, snips or a hobby knife can damage the part, or even break it. A good solution to this is to get and use a good razor saw. Carefully cutting the part of the sprue using a razor saw can help save the part and get it off the sprue without damage.
The razor saws I use are from RB Models. The set comes with a photo-etched clip to hold the saw that will fit into almost any hobby knife handle. The blades are thin and sharp. I prefer to use the fine blades, as you can control the cut better, especially with delicate parts.