Yes.
As JGeorge mentioned, if he did run the red light, and speed was a factor, it certainly will be a defense. There are a lot of unknown facts as JGeorge also mentioned, however, a picture paints a thousand words...in this case an actual video.
No matter the speed, and whether the light turned red, the pickup truck was sitting waiting to turn...deep in to the intersection at that. That tells me two things, he didn't have an arrow as he was waiting, and yielding the obligatory right of way, and second, he possibly was too deep into it to even be able to see the traffic light above changing, etc. So, if Clark ran the red light, it's quite possible so did the other vehicle...and he was the one making the turn.
Perhaps, the largest factor and most damaging is the fact that the pickup truck struck/clipped Clarke's vehicle with its front end. That point of impact strike is very critical and will probably play the most significant role in determining the brunt of the liability.
Edit. From the video, the vehicle that entered and crossed the intersection before Clarke's vehicle appeared to be traveling about the same rate of speed...at least from my observation. Interestingly, he yielded to the preceeding white car, but not to Clarke's vehicle.