Hm. So he kept his head down, eh? He should have been instructed to watch it. Not so he can re-live his glory, but so his body language could be read. He didn't look because his body language would show that he enjoyed it then and still does now.
I tend to agree. I'll bet there were a lot of eyes on him in that courtroom during the playing of that film and he knew it. Showing any type of interest in his handiwork would not have played in his favour IMO.