Blizzard updated the Unstuck function in 4.0.1, instead of teleporting you somewhere, it instantly kills you (lol). Pretty useless, but a lot of people have probably overlooked this and it does make for some funny moments to screw with lowbies. I'd imagine that it'd be useful to certain roleplayers trying to go for a "death scene" or something.
For everyone else, this is useful if you're exploring/out stuck somewhere and have no way to die, but don't want to hearth.