As a longtime adoptive parent, I've seen this in this country before. There are several kinds of 'disruptions': this is the kind that never should have happened because the stupid agency should have picked up on the fact that the couple would be awful adoptive parents. Unfortunately, a lot of agencies will accept anyone with the bucks.
Some disruptions are valid. We've known people who were lied to by agencies about children's problems and the kids came into the adoptive home and immediately tried to burn it down or they (in one case we know of, on the first night) molested kids already in the home.