mamabee,
I am so sorry you are having to deal with one more stressful situation in you life right now, and it probably has contributed to your UC symptoms getting worse too. But you're right, the first you have to do is protect yourself and your children.
Do you have a back-up plan if locking him out doesn't work? Can you speak with a counselor who might provide some help emotionally, and as to your and your family's safety as well?
Did you receive any of the stuff we talked about: slippery elm powder, etc...?
If you, I would suggest you start the slippery elm powder right away - it will help calm down your symptoms. Do you still remember how to take it? If not, let me know. When I was on prednisone it did nothing, no help at all.
What about rectal meds? Are you still using those?
I hope you start to feel better, and are able to get a handle on your family situation and get that under control.
A big hug to you.