Of course he did. He ran into a player who was in mid-air. And he has no right to do so under the rules unless he is contesting the ball, which he wasn't. This is what the bias dumb merkins don't get. It's called the international laws of the game of rugby league. If you're too thick to understand them or too bias to interpret them correctly, stay the f**k out of debates about rulings.
Yeah I'm agreeing with you. For sure, the logic is sound. In reality Klemmer is actually lucky Slater only kicked him in the head, so long as he's in the air Slater was well within his rights to start raining punches down.