I don't think you were too hasty, and I hope you don't think I was being a smart ass in my response to you, because that certainly was not my intent. I think you were right on, at least in terms of questioning how 0.5 translates into a pass rush. The guy has gone 4.5,3.5,3.5,0.5 in the past 4 seasons. I think it's fair to wonder about that drop off, especially since he was also blanked as far as passes defensed, and I think it's fair to question how much pass rush he'll give the team when he's facing guard/tackle combos instead of guard/center combos.
I'm not sold on this move, by any means. I'll reserve judgment until he's had time to get up to speed on two-gap techniques, but he's never exactly lit the world on fire in the 4-3, so I'm not expecting all that much from the guy.