Hey when you copy the embed code from youtube, there should be an option to turn that off (usually a checkbox below the code you copy)… or just modify the code by adding ?rel=0 immediately after the iframe url like I did below.
‘<iframe width=”420″ height=”315″ src=”https://www.youtube.com/embed/oBOD6x-dZSo?rel=0″ frameborder=”0″ allowfullscreen></iframe>’
I don’t know about that plugin, but hope that helps,
Kevin