I’ll bet you’re right and that the glove was just to cover the stitches and keep it from being looked at.
I’m betting he’ll be 100% ready to go by Ok State. I’m guessing he had a deep laceration, and while he could have easily thrown a ball yesterday and had no problem, the longer you rest it, the less likely it with dehisce or get infected. Yesterday was just a precaution to prevent any rare complication that could actually derail the season.