OK I've ended up doing this several time, I hit the space bar to jump, whether intentionally or accidently, and I end up underground in first person view staring at a cloudy sky, I log out and then back in and I'm doing the falling action in a cloudy sky. At this time only way I know to undo this is /stuck which as you know kills you and your equipment ends up taking damage, is there some other way to get back to land without dying?