i saw a good post in a gdt thread on this topic the other day, and it was replying to pierre whining about this issue. pierre said its a stupid rule because no one ever intentionally clears it over the glass anymore and the post replied that the reason no one intentionally does it now is because of the rule.
im not crazy about the penalty myself, but the constant whining about how its just an accident when it happens is total b.s. most penalties are accidents. when do you see someone purposely high stick someone in the face for a 4 minute penalty? its always a missed stick lift or something that causes a high stick;an accident. same with slashing. like a player goes in and says to himself 'im going to break this guys stick in half and take a penalty'... once again, the player is attempting a clean play and through bad luck, a penalty occurs.
most penalties are accidental. players dont go around trying to put their team shorthanded. these rules are there to keep players responsible for their actions on the ice. just as its the players responsibility to keep his elbows down when hitting, just as its a players responsibility to keep his stick down, its also a players responsibility not to clear the puck out of play. is that too much to ask?
True, "it was an accident" isn't a good argument against a penalty, but that doesn't make it a good rule. Not every rule violation has to be a penalty. Imagine if they made icing a penalty, or a hand-pass, or offsides, or shooting the puck out of play in the offensive zone...
Back when this used to only apply to the goalie, I don't recall any notable issues with players flipping the puck out of play all the time. Nor do there seem to be any problems in leagues that don't have this rule. This rule needs to go.