I am indeed going to miss my target. I was aiming for a reduction of 80 in my TBR list, and instead I'm only going to have reduced it by 72 or 73.
On the plus side, I have read lots of fun books, and I have managed to restrain my book buying to (mostly) wanted bargains, such that my average bought ebook cost this year is only $2.27, compared to an average cost of books read this year of $2.85. (Which was also the average cost of the book I read in 2011, while in 2010 it was $3.71.)
It seems that having a large TBR does one's average book cost a great deal of good, since one can wait for the special offers and reduced prices..