Another perspective...
...the coaching fraternity is a very tight one. There are a lot of unwritten rules they tend to go by. Putting up 100 on an opponent gets immediate reaction in that "fraternity". And, it's not a good reaction. Many would find it completely disrespectful and worthy of pay back in the future. I'm glad we stopped when we did. No need for anything more, not even our practice guys who weren't redshirting.
Side note but somewhat related story I always remember...
...in 1990, former Atlanta Falcons Head Coach, Jerry Glanville, called timeout with a lead and about 20 seconds left in a meaningless preseason game against the Houston Oilers to bring on his field goal unit to make a meaningless 3 pointer instead of just letting the time run out. During the postgame presser, he was asked why he did that. His response was interesting (and few knew about it until he brought it up).
The HC of the Oilers was Jack Pardee, who had been the HC at the University of Houston the previous season. Pardee's Cougars in 1989 defeated SMU 95-21 and accumulated 1,021 yards of total offense. The SMU Mustangs were in their first season back from the death penalty and was starting 17 true freshmen. Glanville stated the meaningless field goal was his little way of doing something for "those poor SMU kids who Jack Pardee embarrassed last season".
Pardee did pull his starting QB (and Heisman Trophy winner, Andre Ware) at the half. He pulled his first string defense after the 1Q. But, it's that coaching fraternity thing again. Payback down the road can be hell - even if a silly, useless field goal at the end of a preseason game.
For more on that game I found this...
http://articles.latimes.com/1989-10-22/s...-touchdown
Houston did the right thing and I hope & expect he will do the same moving forward given the opportunity. And, I think this team could put up 100 on at least 2 opponents this fall if Houston was a douche and wanted to.