Hi vicky, sorry you are here but we support each other.
So your H says he is no longer paying the mortgage because you told him to get out (is his name on the deed?), H is going back and forth like a ping pong ball and you are worried if H will think you are controlling?
I do have a hard time taking a stand but in this case you need to protect you and your family financially. First I would get legal advice. Most attys (ask because some do charge) give free consultations for advice. Find out your rights. I know that I felt more empowered after meeting with 2 attys for advice.
In your case if your H wants to come home you need to set up a No contact agreement. I know the OW has your H's son. H can make arrangements for someone to pick up son.
take care.
Me 53 H 50 D16, D29 M 22 years bomb 7/08 INH - alien pod replaces H 8/08 - OW (direct report), I work there also bomb II - H moves 10/1 expose ow 10/22 D to be final 9-09