The witches that are on the other side watched as their chosen got ripped apart; not that he was surprised but still that pissed off the witches and what pissed off the witches more? Tyler their chosen's coven member was also taking ABUSE that should not be dealt on him.
The witches were frustrated by Caroline's and bonnie's parents/guardians and disappointed that the children were dealing with this pain. They should be happy and enjoy and be free.
So the witches that started to care for these children were plotting something very devious and hoping that it would work. What was their plan you ask? Murder. Of who? Miranda and the mayor. Details of the planned murder? You just have to wait and see.