Quote from SomeAwesomeGuy
^Same avatar as me.
The minecart is not on the rails. Simple.
Push it out.
Quote from kamyu
it is the result of a graphical glitch. sometimes powered rail will turn like normal rail, but it doesn't have a graphic for that state so it still looks straight.
fiddle with the offending piece of rail and the one next to it (or re/move the neighboring piece) until it stays acting the way it looks.
Quote from jbrian1
Nah.. it just fell from too high
Quote from Mykroe
Wanna know a weird Minecraft bug?
The giant spiders.