Couldn't it break AFTER it sank?

We all can't stop from asking: Couldn't Titanic break UNDER the water? Pretty much everyone believes it broke at the surface, but some people say it broke underwater. They say the people who saw the ship sink intact were right, and the people who saw it break in two were "seeing things." Now, here's this question: Who in the world can miss a giant ship, sticking up in the air, and splitting in two? Nobody really knows, all survivors are dead. But, just imagine being in the icy water and panicking. That might have been a problem for them. Anyway, the theory goes like this: The ship sinks intact, under the water it's moving around a lot, ripping things off, then SNAP. The hull breaks in two, in front of 3rd funnel, and hits the bottom of the ocean. But wouldn't all of this cause even more damage to the bow and stern? Probably so. Anyway, another theory says it broke when it hit the sea floor. Again, wouldn't this cause more damage to the bow and stern? These 2 theories are a maybe, but are probably not true. In fact, I say it's a 1 percent maybe and a 99 percent no. Why don't I say 100 percent no? Because, some survivors do say she sank intact. But, I bet you THEY were seeing things and missing some details, and the ship did actually break at the surface.