LOL, If you look closely you can see the screws held tight and were still in the snowboard. The base plate of the bindings is still screwed in but everything around the base plate screws disintegrated.
My buddy got ejected from his board once. Upon inspection, the baseplates themselves had disintegrated. My buddy was OK though and we all got quite the chuckle from it. Good job catching it on video! Also, good to see that your buddy wasn't injured.