I was watching the game at a bar around the time Vincent Joseph was hurt. He was on the field and I didn't see if he was moving or not. They took their time to stretcher him off the field. After what happened to Kevin Everett, it was a scary situation. I didn't see the play or anything.
Apparently, Joseph was injured on a kick return after being hit. His injury is a bruised larynx. He was taken to the hospital and had trouble breathing.
Thankfully, it looks like he will make a full recovery.
USC's Joseph bruises larynx on kick return - NCAA Football - Yahoo! Sports