Kimmerz, There are a number of things I see going on w/your xh:
1. He wants control and how best to keep that control than to threaten the cutting of the cell serivce as well as the other things that he pays for? He wants to feel like the "white knight" as well as a victim in all of this. I wouldn't offer to pay one thing...it's control and manipulation.
2. Paranoia is very strong during mlc. OCD may become stronger during this time as well. I'm going to assume he's not washing his hands a thousand times a day or your girls would have said something about it.
I honestly do not think he's any where near hitting bottom. He's got a long way to go and if the ow is still in the picture, she is the one that is still helping to hold him together. Until he loses everything, he will not hit bottom.
Reassure your girls about everything. You do not want them walking around and being afraid to do or try new things in life.
Hang in there!
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.