Boys HS (F/S—so you're solo), @ 60', everyone's driving up field over the halfway line as attack forms up. You glance towards the attacking team's bench as a collision well behind and off the ball catches your peripheral vision, but it's incidental contact so you continue trailing play (five yards behind the attacker with the ball). Then almost simultaneously, just as you're beginning to look forward to the attacking through-ball, you see the receiving attacker is clearly at least 3-5 yards O/S when the ball is played to him by his teammate (and your head hasn't made it all the way facing forward yet, that's how fast it happens). All the defenders in front of you instantly start throwing up their hands before you can get your whistle to your mouth and blow it for the O/S infraction. Attacking team's bench goes understandably apeshit.You know what's coming from the coach... "You're letting the players make that call, Ref!" How the hell do you sell that, or do you just pretend you didn't see the O/S? The latter makes me shudder, but at the same time I can't think of how the hell to sell that. Ideas?