I for one am glad they are sticking together as a family until they have factual information or proof to act otherwise. I know many have stated they think TS should have said more, or done this or done that, but the fact of the matter is that almost none of us have experienced what that family is going through and even those that have probably understand that everyone deals with tragic events differently. It's entirely possible that due to the media reports about his past that an understanding, agreement and IMO a good thing would be to have Chad head up the entire operation as anything TS said to the media or to the volunteers coming to help search would be analyzed and scrutinized to no end. So it just makes sense for him to do everything he can to help but step back from being the head of it all during this entire thing.
I myself, like the family is sticking by him until I have reason to believe otherwise. There is enough other information floating around and while much of it is probably distorted or convoluted, I am willing to bet bits and pieces of it have some validity to it and whether or not it is Todd or someone else, people are going to be shocked. Many will be like, yeah we knew it all along, while those that would never believe it would come to this will be shocked (family and friends), or if it turned out to be someone else, we will be relieved that we were not fooled and that the family does not have to suffer even more consequences, and everyone else will be shocked they were wrong as they were so certain that he was guilty.