[Theme: Spun] BWS Gallery radius'd images

Hi,
I’m looking for a way to remove the radius’d corners from images that I’ve uploaded to a gallery, specifically the BWS Gallery plug-in. The images didn’t have radii when in use in other themes (including Twenty Twelve) and source images aren’t uploaded or edited to contain radii.

Any help is greatly appreciated!

My blog: Adventure-Ti.me
Link to the gallery: Gallery