Re: The Impossible Girl: Who IS Clara Oswin Oswald?!?
"Back into the Time War, Rassilon! Back into Hell!"
Which, to me, implies that they will be going there to continue to live and die and live again in the neverending cycle of the Time War. They didn't all just die.
The Time War is still happening, and it will probably keep happening forever; it is simply happening outside of the normal Universe, so that nothing else can ever be affected by it.
The moment just time locked Gallifrey, the Doctor said the planet itself is gone, so I think they were just sent back to the moment just before the planet was destroyed.
The greatest science fiction series of all time is
Doctor Who! And I'll take you all on, one-by-one
or all in a bunch to back it up!"
--- Harlan Ellison, from his introduction
to the PINNACLE series of Doctor Who books