>>271622340
Try taking a piece of paper and running it into the gap between the grip button and the shell to try to get things back into place. I had the problem where some little piece of rubber was preventing the grip from popping back out and was able to get it to work again.

Taking it apart is possible but messy, a lot of glue https://www.ifixit.com/Teardown/Oculus+Touch+Teardown/75109