ORIGINAL: bomccarthy
Game of Thrones is a very interesting experiment in parallel stories - with the TV series now outpacing the books and seemingly going in different directions. Most authors would be livid and uncooperative, but George R.R. Martin's background is in television (he was a writer for several seasons of the CBS series Beauty and the Beast in the 1980s). He understands the time pressures and production limitations inherent in television and seems content to let the GOT screenwriters go where they want.
The "extras" in the on-demand version of GOT, and I assume the DVDs, which I don't have, indicate the two show-runners have met with him in highly secure locations and he has shared in detail where he intends to take the books through completion. They of course are free to deviate under their contract.
That the books are now behind the show is his fault, not theirs. He's blown past several deadlines for the one due.