The last 4 minutes or so OKC stopped running what was been successful for them this whole series and just went Durant and Westbrook iso which predictably went terribly. Sometimes I feel like in the NBA it's just a cliche for the number 1 guy in the team to have the ball every play for the last couple of minutes, even when it's not in the best interests of the team. GSW knew it was coming and just pressured them into crappy shots.
As an aside I also think it's another reason why LeBron is so great, but that's a different discussion.
Suddenly mentally it's very tough for OKC, but they've shown their resiliency so far. If I'm Donovan I just keep telling them that they played the better ball today and if they do it again they should win. Gonna be tough though, credit to GSW they've shown their mettle also by hanging around in the first half when the game threatened to blow out a couple of times.