My first reaction without a board or computer is to suggest 9...Bg4!  White looks clumsily placed, doesn't he?  10.Rxb7 Bxf3 11.gf cd 12.cd Bxd4 and isn't Black better?

A long time ago, when 8.Rb1 first appeared, 8...Bg4 was thought to be OK.  The very first time I ever played 8.Rb1 was in a casual game against Martyn Corden (USCF 2450) in '96 or '97.  I had only just seen 8.Rb1 after looking in Psakhis' Complete Grunfeld for something easy to play as White!  There were only a few pages on it in Psakhis' book so it looked like a pretty theory-free way to try for an edge to me at the time  .  Martyn replied with 8...Bg4 and crushed me; I still remember the game.  Anyway 8...Bg4 was soon found to be theoretically lacking (long before the game I played against Martyn), but I think it looks good here since White has wasted a tempo and stuck the Queen on an odd square.  I'd be inclined to give 9.Qd2 a ?! or ?.