Veryregretful, I just wanted to pop in to tell you I think you ARE doing great. I know it's sort of a tornado of emotions and events at the moment, but you're doing great and protecting your children against your STBXAH and his enabling family. Good idea about blocking your X mother-in-law from calling the kids on their cells. At this point, both your STBXAH and his enablers are going into high drama and blame mode. They'll pull out all the stops: emotional manipulation and blackmail, maybe more threats, acting like victims. Keep your eye on the ball; you'll get through this.
Thanks for keeping us updated!