If you're interested, this concept has been discussed previously, and extensively. The March 2011 Illinois game at Purdue was the major example.
Illinois was up, way up, when Demetri McCamey got his second foul. Weber pulled him. The lead evaporated. Purdue won.
I was covering that game. Here's my column.
http://www.smilepolitely.com/sports/what_else_is_on_tv/I noticed that Mark Tupper, the second most senior of the Illini media pool, seemed fixated on the "two fouls" point. I think that's the night his faith in Weber ended.
Loren Tate, the dean of the Illini media (and indeed, the Big Ten media, if you discount Gus Ganakas) addressed the issue earlier this year. He wrote a column in which he praised John Groce for leaving DJamer Richardson in a game, despite picking up his second foul. He ended the column by noting that DJamer finished the game with 2 fouls.
It was the same with McCamey: He didn't foul much.
So the point was that Weber was inflexible. He couldn't adjust to nuances. He employed hard/fast rules.
The "two foul" rule can be useful, but only if you know when to ignore it.