Sometimes, spoilers get out just too quickly. Back when Airlock Alpha was a spoilers site, we would always worry about releasing some spoilers too quickly for fear that the writers would go back and change it, or worse yet, those scenes would just get edited out. Luckily for us, the ending of “Battlestar Galactica” remained intact, just as we had predicted, but the same can’t be said for the upcoming “Terminator: Salvation.” It seems that spoilers leaking of the movie’s ending, where John Connor is killed but his skin is transferred to metal to keep the dream alive, got Warner Bros. in such a tizzy, they decided to change the ending again. Now we don’t know what the ending is. But it is testing much better with audiences, and maybe that might mean “Salvation” can be saved after all. …