Yeah, that's about airplanes, not gliders, but even so, I am not sure I would totally buy into that.
This guy was apparently very lucky to walk away from this with only a few cracked/broken ribs. Ow.
DISCLAIMER: As with a number of photos that I post here, I do not know the original source of these. It appears they are under copyright. If anyone can give me a source, I will gladly give attribution, or remove them if someone really objects. My approach is that it is O.K. to post photos such as this if you give proper attribution and a link to the person's own web page. A commercial, of sorts, and an invitation to go visit the home page of the source of the material. Just covering my butt, in other words.