That's not a defender issue, that is the basis on which defending in today's football built upon. If you take it away you get all teams sitting deep, no high lines, and therefore less spectactle.That's a defender issue. I just think players should be allowed to 'brawl' more in situations like this and be allowed some leniency regarding offside for the sake of spectacle and fun. Offside should just be feet. If you manage to get into a better position and play the ball off head or shoulder or whatever then more power to you.