HAHA... That was pretty funny... I dont see where Stewart did anything wrong..
I know that CDA's going to bag on me, but typically a rider (Stewart in this case) would square the corner up after coming in like that. Instead Stewart decided to take him out. It would've worked in Stewart's favor except Bogle's leg got caught in his wheel, taking both of them down. Bogle's very lucky he didn't get hurt, remember what happened to BT's leg?
I'm just not sure why Stewart got fined, unless there's more to this story, as this isn't the first time somebody's done this. I can understand Bogle's fine though, as resorting to fists (on the track) is pretty unsportsmanlike.