Without re-watching again, which I won't be able to do until I'm home tonight (at the office now), I'll say I'm fairly certain he played the rest of the game. I know his second holding penalty came about 10-12 minutes of game action later.
If he practiced Monday, it's an NCAA violation -- that's their mandated day off (haha). But Clawson said he's fine. This quote:
"We stayed clean for five weeks and, you know, we’ve been on the right side of it and, you know, we lost some kids that will hurt us, but that’s football. Everybody goes through it. You feel more bad for the individual player. I mean, Luke was just playing so well, such a high level." -- actually came after I asked Clawson about Herron, and he said he's fine.
Also saw Herron come off the practice field today in full gear.