Using Spirit. Can I deactivate the gallery "lightbox" image?

Each of my gallery thumbnails is attached to a custom popup. When you click on a thumb the popup appears but when you close the popup the lightbox image slider is underneath it and you have to click that to close it. I want just the popup and not the built in lightbox image to show. Can I deactivate that somehow?
(you have access to the site if needed)
Thanks!
Terry