Please help me to remove these elements

Could not get plug-in to work on theme:

When I un-installed it, all the videos on my homepage were blacked out with a green play arrow visible. Each video was surrounded by orange border. Hovering over video revealed a url like this:

http://s.ytimg.com/yts/swfbin/player-vflyj9rk/watch_as3.swf

Please help me to remove these elements

http://gracetheologyinstitute.com

Charles

https://ww.wp.xz.cn/plugins/wsi/