yeah, i asked the same question a while back and someone close to the hyperdub lot confirmed most had been cleared after the record came out.
Personally I don't really have a problem with Elbow winning, they are a decent bunch of lads. I've always enjoyed Guy Garvey's radio show on xfm manchester, always bashing out tom waits and leonard cohen for them sunday afternoon blues. I have found their music bland in the past but friends who are fans have told me its their most crafted and varied work to date. Plus they part own one of my favourite bars in manc, Big Hands, which contains some of the worst toilets and sexiest, crazy barmaids you are ever likely to lay eyes on.
And as for giving it to radiohead, pull yourself together man.