So I have a ds10 and dd8 - me and their dad have been split up for 4 years. I have always facilitated contact and we have never been to court or have any kind of legal agreement. Ds has special needs and has anxiety and aggression, although this has been better of late. Last week he got very upset saying he is stupid and deserves to die. I comforted him and it all came out that his dad calls him stupid and moron and that he doesn't want to go any more. Neither child went that week. Ex insisted on a meeting at which he agreed to stop this. Ds agreed to go today, but then said he wanted to come home tonight rather than stay the night. I told ex and he refused to agree to them coming home and drove off with them. Ds looked distraught. He now says that we just have different parenting styles and that I shouldn't pander to them and I'm making something out of nothing. I don't believe I am and I am not willing to do another handover like that.
How do I proceed. Do I just stop contact and wait to see if he takes me to court or is it better for me to take action first. I would be happy with say a contact centre or somewhere ds could feel secure but don't know how to go about any of it.