Sweetbriar, He is retaliating because you will not allow him to stay in the home one or two nights a week. He's having a temper tantrum like a two year old. Call Sprint and explain the situation to them and they should help you. My xh threatened to do the same thing my house phone when my father was due to go in from surgery. I called Verizon and explained the situation and the rep was wonderful and changed the phone/bill into my name. They see this a lot.
Call them now and get this taken care of today. You need to be able to be in touch w/your girls. It's a crazy world out there. I would also advise my lawyer of what he's done. Actually, provide your lawyer w/a copy of the message.
Now about facebook, are you sure...you need to be careful what you are posting there. It could be a family member that has sent on your posting. It's obvious that your quote rubbed him the wrong way and yes, the support is what pissed him off. He doesn't like it that you've got support and the guilt and shame of what he's doing is eating at him.
Listen, I'm going to be very honest w/you...it will get worse before it gets better. You need to start thinking about changing the name on the all of the utility bills. If he cut your cell service today, heaven knows what will be the next thing he does. Have you notified your car insurance provider that he's moved out? You might want to discuss all of this w/your lawyer. I don't like the avenue he's traveling down right now.
One more thing...he's in IT correct? You might want to have someone take a look at your computer and see if there are any programs on there for him to have access to your keystrokes and information remotely. My xh had a command typed in so that he could access our email remotely and see what he or I would receive and responses. His mother told me about it because he had shared w/her some things that I had posted to some friends of mine that wasn't related to him or his crazymaking. I spoke to an IT rep at work and they told me what to look for and sure enough...I found the command and deleted. I never told him what I had done and he was furious when he couldn't access the account any longer remotely and one more thing that I did, I contacted my provider, explained the situation, and we worked together to change the userid and password w/the stipulation that no one was to have access to that account w/o my knowledge.
Whatever you do, do not back down on your boundary of him staying at the house. He's trying to bend you to his will. Please be careful...I don't like his behavior one bit.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.