I wonder if someone in their recruiting office messed up. A lot of the mailing work gets done by student workers, stuffing envelopes and putting on labels. I know recruiting is a really competitive game but I can't see any real reason to send that many letters to a kid on the same day because if you do it for one recruit and don't do it for others you could end up looking bad in those kids eyes. Recruit A gets 105 letters, recruit B just gets one....I would think your school is going to loose some major points with recruit B. No matter how nuts Bama and other schools are I can't believe they want to get in the habit of sending 105 letters in one day to all of their top recruits.
I bet someone printed out a bunch of mailing labels with this kids info on it and someone else just slapped the stickers on the envelopes without paying any attention to whose name was on the label. That or they just assumed that the recruiting coordinator wanted it done that way and didn't question it. Student workers are not likely to question full time staff and will just blindly follow whatever instructions they are given.