Beveled curves spike filter?

I have a logo in the form of an SVG from the art department, and I extruded and beveled the curves in Blender 2.68a. When I did so, (after offsetting the bevel), sharp corners spike like crazy. I know why it does this, but is there a spike filter somewhere? Either in curves mode or if I converted to a mesh? I’d like to preserve the integrity of the logo and not have to round out most of the corners.

Take a look at this tutorial: