No worries, I went ahead and deleted all the posts and images (it took a full day..lol) and recreated the automatic imports. So far so good!
Is it normal to have 9 versions of the same thumbnail? There’s a main one and 8 others of various sizes, like all-trailers-for-gta-5-2-youtube-thumb.jpg, then all-trailers-for-gta-5-2-youtube-thumb-480×272.jpg and others.
Also, I take it the scrolling between the embed and featured image like on http://www2.wikigameguides.com/angry-birds-star-wars-2-p2-s2-3-star-walkthrough-escape-to-tatooine-level-p2-s2 is a theme problem?