Well prior to his injury he was among the league leaders at his position. Remember voting started like 6-8 weeks ago and he was still active in the league then.
What you really should be complaining about in this voting is that there were a number of players that didn't make it that should have. Fred Taylor, David Garrard, Joey Galloway, Jeff Garcia, Mario Williams are all deserving of the Pro Bowl more then the people that were put on. We could have made a case for Matt Shaub had he not gotten hurt.