This team should have been way more aware of where your team was. As I saw, you were the only person on your team near. Usually, a few from the other team sticks around. If I was the team attacking baron, I would be suspicious where they were- exception if they were recently killed- which is usually the case. But even then, the jungler was alive, so that team should have been way more careful. Their mistake, nice job taking advantage of it.
He did have smite.. He used it when I ran around to hook.. so he panicked and miss-smited.. I was like "okay, time to try" and got it.. I've done that before, but I only care when I steal it.. Oh, and another steal I've gotten was with poppy, drag was down to 300 health, I ulted, knocked all 4 of them away, flashed over the wall and smited it.. was great.. also, I've ulted their entire team on baron and then our Ez ult stole baron.. so I guess I contributed in that one as bard. No recordings of those though, those were like atleast 6 months ago xD. Yeah, they made a lot of mistakes, 1 which was not getting one of their teammates to chase me to make sure I didnt try to hook it and steal it.. but who predicts someone stealing baron.. they dont xD.