First post-cat8 jump, doing a celebratory two way with my instructor, when i went to track away which popped my shoulder out. It was my right shoulder so i couldn't pull my ripcord - so followed reserve drills with one hand, one handed canopy ride, and flaring with both toggles in one hand. Thankfully managed to pop it back in once i'd got my rig off! Getting cat8 and then being grounded in one day - total bummer!