I have made some extensive changes to some files, so I don't want a completely non-responsive theme sent to me.
It is not possible to do this with our theme because it is implemented on Responsive 960 Grid System. If we try to make it non-responsive then there might be a chance to loose the Theme layout. Instead you want to make it non-responsive then try to remove all the media code from the style.css file, 960_24_col_responsive.css file and all the color file in the color directory, present in your Theme Directory.