People need to get over DX:IW.
Spector had an obligation to back the game, as he was the studio director. You don't hear Feargus saying, "I've hired people to work on KOTOR:2, and I sign their paychecks but I think they're all idiots."
Spector is a professional, and whether in retrospect he feels things were handled well or poorly on DX:IW, he's probably not going to say. If he worked on the game directly he is entitled to self-criticism, but it's really bad form for him to rip a current or former employee when it's not going to suddenly make the game better.
What do you really expect from him?
He had 20 really GREAT titles, and one that missed the mark that he didn't even work on, but we should all be bitter?
Grow up, or change your name to Visceris.