Crazy EXPLODING BOOK SHELF!!!

Ok, so, this is basically.... just really wierd!  SO, here goes.  I was laying in bed praying at 10:40 at night without my hubby who was gone at work.  Everyone else was asleep and all was quiet. Out of NO WHERE there was this huge CRASH!!!  I just kinda layed there in shock for alittle bit, then kept listening....  I went out into the living room and turned toward the dining room... then I saw it.  My bookshelf had EXPLODED!!  Maybe this is a sign.... to many books???? LOL  NEVER!!!  It was crazy though, so , ofcourse, had to take a picture!!!