Listen, I'm not saying that it is 100% Thomas' fault. In these 'last few hundred meters' type crashes the blame is usually easy to spread around, as it is in this case as well.
However, if you're going to do what Thomas did, you need to observe and find the least dangerous way possible to extract yourself from the sprinting bunch. Now, it's not always possible to do, and I won't blame a man if he had no choice but to do what he did... However, Thomas did have a range of choice. He let himself drop to the left of where he was when finishing his lead-out (IMO the most dangerous based on where the other sprinters were)... He could've let himself drop to the right of where he was (still dangerous, but less so), or he could've peeled off a few meters to the right. He had the room, and the speed, to have done that effectively. That was, as I see it from the tv shot, the least dangerous option.
So when I say he could've done a better job at preventing the crash, this is what I am referring to. And again, I did not, and do not, say that Thomas was 100% to blame for the crash.