Yeah, I read somewhere that he wrote a letter to Lucas about it (!).
I don't think its true, and I didn't hear any detail of what was it that was modifed or removed. If it was, I gotta believe he would have been even more vocal RE: the copy/paste job for AOTC; unless he had no time and himself suggested that they re-use some scores. either way, it sucks that the Battle of Geonosis did not have its own theme - all the other battles did.