OK, hint was the wrong word, but I just thought more of it as just showing how quickly he could lose control. And I guess I consider him having dark side as being different from him falling to the Dark Side.
It's not so much about how quickly he can loose his temper so much as it is what he does when that happens. For most people a "murderous fury" isn't quite that literal. And it's not that he just lashed out at the first Tuskens he saw or only cut down those that tried to defend themselves. No, me methodically and premeditatively went through that village and sliced up every living thing.
Think about the mechanics of that for a second. Once they saw that a crazed wizard was cutting a swath through their best warriors, it likely at least a few of the women would have grabbed the children and made a run for the open desert. Anakin would have had to chase them down.
Falling to the dark side by dint of "dark side powers" isn't really how it works. It's more fundamental than that. Cart before the horse etc.I was thinking of as being the start of his fall because it was when he first started considering using Dark Side powers.