The large object seen leaving the cloud before the final breakup has a distinctly Dragon-looking shape (https://youtu.be/2K030HRTutU?t=2m36s), so it appears to have survived whatever happened basically intact. (This isn't super-surprising, Dragon is a pretty compact structure with a pressure hull, compared to a long and skinny rocket.)

Gwynne stated in the press conference that, to her knowledge, the range safety system had not been activated.