Geoff Johns Newsarama 2008

link to interview here

"Since we’re going back years, a sidebar for a lot of you Spoilers fans – early on when I started talking with Dan about Flash, I remember him bemoaning the fact that they were planning on “killing” Spoiler, one of his, yes, favorite characters. Dan had just started and wasn’t the E-I-C yet and had no control over the Bat universe. He still misses Spoiler."