Big Ten officiating coordinator Bill Carollo told CBS Sports on Sunday that he thought there was slight contact by Edmondson and supported his official's call.
"The degree of that (contact) you can debate for the next 10 years," Carollo said. "When you've got 4.3 speed running down the sideline, it doesn't take a whole lot to move you. It's not one of those obvious ones that people will say he was pushed. These defensive backs are very well coached and he was probably taught exactly that way. I wouldn't say to coach these guys differently, but they know that's the risk when you run down the sideline with them. ... He's squeezing the sideline. That's what the defensive back is supposed to do. He's trying to get him out of bounds."
Carollo said he felt "pretty comfortable" with the positioning of the official. "I pay him to make those calls," he said. "Either way, we're going to have to make a decision. You take a touchdown away, it's a big play. Do I wish it was more obvious? Sure. But replay can't fix that. It's a tough judgment call."
http://www.cbssports.com/collegefootball/writer/jon-solomon/25367501/big-ten-officials-used-proper-mechanics-on-nebraska-michigan-state-td