Ricky, are you sure that's why Capello left him? Or maybe because he's just not that good a player. Watch the NLD again. Theo's two goals were fantastic and gave the team a lot of energy, but of our attackers, he was probably the least impactful apart from the goals. if anything, in the first half he was downright frustrating. RVP was constantly involved, getting good chances. Had 4 excellent chances in the first half alone. Rosicky was playing like a man on fire, constantly demanding the ball, distributing, playing one-twos, getting into the box. You look at Walcott throughout the game and realize that he was anonymous or destructive. But he scored 2 goals. If I was a manager, I'd be incredibly frustrated with Theo because he's such a high beta player, across the season and even within games.
And that's simply done to the fact that his game hasn't developed that well. When he's running in/to space, and getting on the end of passes and given room to shoot, he's devastating. But in just about every other facet, there are significant development gaps. This is why Capello dropped him