Westbrook has been shooting more efficiently in this series than he does normally, by a pretty big margin. Of course everyone the Clips can use against him are completely unable to guard him so that shouldn't be too much of a shocker. Prior to the series the talking heads were pointing out how much Westbrook had abused the Clips and CP3 all regular season long.
If I was in Doc's shoes I'd keep dropping under screens and make him continue prove he is a 50% 3pt shooter. Packing the paint is just too dangerous with Durant on the floor and despite the hops on Griffin and Jordan they don't have the footspeed to rotate and challenge shots effectively.
The thing that is holding the Clips back the most is themselves. They are shooting terribly. They are a high volume 3 pt shooting team, like most good teams in the NBA. Aside from game one where they destroyed the Thunder they have shot very much below average. They are keeping the games close and even stealing a win today despite shooting under 25% on threes the last three games. At high volume. That coupled with Westbrook's suddenly efficient shooting is odd.
Westbrook is a career 43% shooter, barely staying above 30% on threes. His career playoff numbers are worse, slightly, but down. Against the Clips? 54% shooting and 44% on threes (AFTER shooting 25% today).
I'd expect those numbers from both sides to regress back closer to normal over what will likely be a seven game series. The Thunder should win. They are a better team. They are poorly coached and completely unreliable though so I wouldn't ever bet on them.