Post Thumbnail Size

Hello,
Sorry to bombard you with posts today. I’ve found that around line 172 the following sets ALL of my post featured images to 75×75 px:

set_post_thumbnail_size(75, 75, true);

I’ve commented out this line for now but it seems like it would be better not to change this setting site-wide in this plugin.

http://wordpress.org/extend/plugins/gc-testimonials/