STATE COLLEGE, Pa. -- Bill O'Brien remained calm and poised for much of Tuesday afternoon, but Penn State's head coach showed some fire when asked about the recent criticism of defensive coordinator John Butler.
The first-year coordinator took some heat over popular Penn State fan boards and on social media after PSU's 63-14 loss to Ohio State. It was the defense's worst performance since 1899, and it was the third straight game the Nittany Lions surrendered 40 or more points.
"John Butler is our defensive coordinator, works his tail off. The kids respect him. He's doing a hell of a job," O'Brien said, his voice rising. "I don't care what the scoreboard says or what the yardage says. This guy is our defensive coordinator. He's my defensive coordinator. I'm proud to coach with him.
"If anybody should take heat, it's Bill O'Brien -- not John Butler. I don't know where that's coming from but, hopefully, that will get squelched. That's a bunch of crap that he's taking heat."
About 10 minutes after O'Brien stepped off the dais, safety Jesse Della Valle took his place. The first question centered around Butler, and Della Valle echoed his head coach's sentiment.
"Coach Butler is a guy that's always working with us as players to develop us every single week, every single day," Della Valle said. "He's extremely passionate about what he does and his profession. And I think I speak for every player on our team when I say everyone has a lot of respect for him and really respects the work he does for our team."
Butler has been forced to operate a defense this season that's without former All-Big Ten talents Michael Mauti, Gerald Hodges and Jordan Hill. Butler wasn't made available to the media Saturday and isn't scheduled to speak this week, but O'Brien said they plan to simplify the defense in preparation for Illinois.
There have been quite a few changes on defense since last season. Last year's starting safety, Stephen Obeng-Agyapong, is now at linebacker. And Trevor Williams, a wideout last season, has started at cornerback -- although O'Brien said that Adrian Amos will reclaim his old CB position instead of playing safety.
"We have a lot of good players on both sides of the ball, but I think we just need to let them go play," O'Brien said. "That's what I talked to the staff about on Sunday -- just let them go play."
Christian Hackenberg OK: The true freshman missed most of Saturday's second half with a shoulder injury, but O'Brien said he was a full participant in Monday's practice.
"He's good to go, as we sit here today," O'Brien said.
Hackenberg didn't need any extra braces on Monday. PSU's head coach intimated he was just fine and will start again Saturday.
"He's a much improved player, he really is," O'Brien said. "He's more patient in the running game. I think he understands how to watch film better. I think he's a better teammate."
The move came on the heels of Zwinak's renewed fumbling issues. Zwinak has fumbled eight times since last season, including twice in the last two games, on just 11 carries.
"If there's one guy making mistakes, obviously, the other two guys are going to play more," O'Brien added. "Right now, Zach has got a little bit of a fumble issue. I do think it's a little bit mental. I talked to him for a long time yesterday."