There are other legal ways to get guys out of the game without having a teammate encourage the guy to fall to the ground. He was up and moving around OK, it seemed......and if that was the case, he could have made it to the sideline on his own during the dead ball, called time out, or the coaching staff could have called a time out if they thought he needed to be taken out of the game. We see guys hobble off the field all the time without causing a stoppage of play.
If a player is hurt there is no wrong way to protect a players health. The Baylor player wanted to stay in the game and finally realized he couldn't. His teammate was smart to tell him to hit the deck.
If the Baylor player tried to run off the field, OU could have snapped the ball and OU could have turned it into a big play. Even if he gets off the sideline, not likely his sub would have gotten into position. BU could have taken a timeout, but why should they if a player is injured. Not like the refs would give BU the TO back when they realized he was hurt.
Shame on Herbstreit for his bush league comments. I hope he was man enough to call Briles directly and apologize. A twitter apology is weak. Kind of like breaking up with a girlfriend via email. That said in reading Herbstreit's twitter "apology", I saw more excuses/justification for his comments than a heart-felt apology.