Youtube SimpleGallery Shadowbox: allownetworking="internal" ?

Hi everyone, I just posted this under [plugin shadowbox js] but thought it might also be appropriate here, as this *may* not be a shadowbox issue:

I would like to implement allownetworking=”internal” with shadowbox and youtube simplegallery.

With for example an embedded youtube video, this code snippet disallows users to click through to youtube. So that if they click on the video, it will simply pause, rather than link them to an external site.

I have used this command successfully here:
https://brassmusician.com/high-notes-low-notes-and-everything-in-between/sandbox/

On that page, you can see a standard embed version of what I want to achieve, and a sample of my shadowbox underneath, used in conjunction with youtube simplegallery.

What I would like to know is, is there some way of implenting this same functionality (allownetworking=”internal”) through the wordpress shadowbox/youtube simple gallery plugin?