It's worth mentionion that the Graph browser using "Retina" is a project from Ouestware (https://www.ouestware.com/en/) which is also contributor to the GraphCommons and GephiLite projects.
I was clicking around with the embed, and eventually hit the "home/house" icon. That takes me to a Retnia credit/loading screen with no way to back out of it that I could see. Was forced to hard refresh the page. If there is a close button, it could be made more obvious