I attended all the UMass games this year except for three: Boston College, Hofstra and SIU. It's hard to remember a game I attended without the refs throwing a sideline warning flag. Maybe two or three.
Guess that rule does not apply to BCS/I-A teams. Watch this video "The mother of all sideline infractions" Even if the guy doesn't touch the ball, look at how many of the Texas staff are on the field...