I doubt they're pissed. Whether you offer the extras to alumni or the public doesn't change the amount that will end up being resold. At least this way they pacify some of the alumni who were screwed when the lottery rules changed.
I'm not convinced all of those tix were returned by Miami. I got into the system right at 10am and was able to see what sectons were being sold. It started out in 16-24C, then to 9-11A, then back to B deck on the west side, then to the south stands. Unless visitor seating allocation has changed, I don't think all of those areas would be Miami fans. Maybe it's different for the early games though.