The final cut of the 9th episode of the Tesla Motors Club Podcast, featuring Chad Schwitters, the former president of Plug In America, is now available. You can watch it now on YouTube or listen to it on all major podcast networks.
Crazy glue/gel should do the trick, unless the part that broke off is missing a little bit at the edges where it sheared off the main section. If the glue does not work, I would consider just leaving it as is (and not attempting to repair it). The break is just one small piece/section and probably not even noticeable/visible from most angles and lighting conditions.