Resetting the Sculpt Mesh

While editing a sculpt mesh, you can store an undo point by baking the sculpt map. You can then reset the sculpt mesh vertices to the baked position by going to edit mode, selecting the sculpt mesh you want to reset and using Object - Scripts - Reset Sculpt Mesh.

This is also useful when you have a number of primitives based on the same sculpt map. After baking the primary sculpt mesh, do Object - Scripts - Reset Sculpt Mesh on the others to update their display in Blender.