I live in Canandaigua, a mile from the track, and this is not the first time he's caused havoc while racing here. Last year on the same weekend he caused a multi-car crash that resulted in a 20 year old girl racer, who's car cartwheeled into the wall of turn 1, break her back. So in two years he's pulled two dirty moves, one causing a broken back and another ultimately leading to a death. There was plenty of room between Ward and the bottom of the track, and it seemed to me that Stewart cracked the gas to intimate him, causing his car to slide into Ward.
Should Ward have been pissed off for Stewart blatantly riding him up into the wall, yes. Should he have gotten out, probably not. But could Stewart have hugged the bottom of the track while on caution, like he's supposed to and not be a cocky a$$-hole, of course.
Edit: now see that Will already pointed out last years incident