He's definitely getting suspended for that, and probably a lengthy one too. You can't even appear to kick a ballboy without being looked at as an abusive monster given the media hype intensifies every little controversy.
To me it's pretty clear that the kid was holding up the game from the outset, felt a little hand on his back and then went down over the ball to delay things a little further. I think at that point Hazard realized that he was being a tricky little cunt, got frustrated and tried to kick the ball out from underneath him (which is an aggressive act since it almost always involves kicking the torso of the person lying on top of the ball as well). Not really worthy of all the furor it's been getting but the FA is probably going to throw the book at him anyway.
Wehheey! Arsenal put 5 past another crappy team! Unfortunately they can't replicate this against teams that aren't called West Ham, Reading, Southhampton etc.