Not to sound bat-sh!t crazy, but ...
Is there any chance that was recorded months ago?
I suspect anything at this point including trickery with his acceptance speech. It was live or was it? As far as the RBG statement he had just gotten off the plane it was impromptu and completely lucid and off he cuff. He was so good you had to ask where did this guy come from? Which brings up a whole different suspicion as in is the mental thing a fake To reduce expectations?