Not informing the boss

My boss's boss revealed that our division recenlty revised a pamphlet without letting him know. I know that my boss did this on her own because she believed that the amendment was a minor one. However, in our department, the culture is that whenever something is for the public, especially a pamphlet, prior approval from top managment should be obtained. As such, I have to go through the whole process again.....fortunately, I succeede to put the printing on hold, otherwise a lot of paper will be wasted.