He definitely has struggled in coverage this year, but I think it would help if we had a reliable nickel guy. I would LOVE WTIII to be healthy and play the slot, or for Lane to develop into that role, but right now we're easily exploited in certain looks. The Falcons had a lot of good plays where they managed to get Gonzalez on Chancellor and a slot receiver/RB on Trufant. I'm pretty sure the coaching staff expected this because Guy was out there much more than he ever was earlier in the year.
The Hawks are probably the only team that can come close to "winning" the matchups vs. the Falcons offense. You just have to score more. The Seahawks did enough to win this game, but just gave it away in about 20 seconds after fighting back into the game.