Are you Jimmysax too? Not trying to point a finger, I'm just wondering if you've changed your screen name from here on. I'm not sure why you would even go down that road about whether I have a connection to Clark or not. You forget about innocent until proven guilty? So if it turns out Clark was framed by someone else, can I assume you or your friend did it? Let's stick to the evidence.
We don't know much about the sock. They said it was a low cut. It could be Clark's, it could be Annie's. His DNA could have been on it if someone rubbed it on his clothing or the inside of his show. You see, he left his clothing lying around, so the killer could have taken his DNA from those sources. You have to also understand that there was clothing that had another person's DNA on it that had Annie's blood, but didn't have Clark's DNA. So you have some clothing with Clark's DNA and Annie's blood, but you have other clothing with Annie's blood and doesn't have Clark's DNA.
I don't know what the nature of the blood is, and the police again, did not say whether it was human or animal. If Clark was a fisherman, the blood could have been from gutted fish, it could have been leaked blood from a side of beef or chicken from groceries, we don't know. All I can definitely say is that unless Clark murdered Annie just before getting in the car, it would have been almost impossible for blood to transfer from him to the car. He completely changed his clothing. If he had blood on his skin, or hair, he would have washed that off before leaving. It's just something the police put into the affidavit to cast more suspicion on Clark, but it really doesn't prove anything. No different than them saying he had a DVD in his possession of Friday The 13th, and one of the ways Jason kills is similar to how Annie died. They try to build a case by making insinuations, but in the end, you gotta prove Clark had the means to do what he did, and that includes time alone in the basement.
I'll let Jimmy defend himself, but your statement about the blood evidence in the car begs for refutation. The mention of the blood in the search warrant fills a legal requirement for the chain of evidence. When the results of the tests are revealed at trial, we will know more and you doubtless will cobble together a new excuse for Clark, who apparently would only commit a perfect crime. Your "unless Clark murdered Annie just before getting in the car, it would have been almost impossible for blood to transfer from him to the car" is simply wrong-headed. (Apparently, the Connecticut forensic investigators, poor fools, were just wasting their time.) Moreover, we have good reason to believe that he was cleaning and disposing of evidence both that day and the next. Some of that evidence has still not been discovered, so it is reasonable to assume that it was carried from the building and hidden temporarily at such a location.