I came across this video this morning. I wonder what causes this, it was obviously hard for the diver to finally free himself.
https://www.facebook.com/photo.php?v=10151501528543380&set=vb.721338379&type=3&theater
https://www.facebook.com/photo.php?v=10151501528543380&set=vb.721338379&type=3&theater