I hope the receiver is OK, too. My low-interest-in-TCU-football wife (I'm her only connection to TCU) couldn't understand why that hit was "targeting". She wasn't buying the argument that there is no "OOPS! Didn't really mean to hit the receiver in the head" element to the targeting offense as I understand NCAA rules.
"Didn't really mean to", such as when the receiver ducks at the last minute, would certainly make the rule harder to enforce and likely generate more tiresome reviews, but they review targeting calls anyway. And if a QB goes into a slide late, they're sometimes picking up flags for roughing after a hit on a possibly sliding QB.
Hated to see Gladney tossed for that play. Wife didn't think ejection was fair to him, either.