Bit left field, but if your debts are really big you could go for bankruptcy and the creditors would either repossess or force a sale of the house. Far from ideal, and would ruin your credit rating, but it's what someone I know did when in a similar position.
The money left from the equity after the sale and repayment of debts was enough for my acquaintance to pay a year's rent upfront for a private rental, and after 2 years the bankruptcy was discharged.
Anyway, a PP was right, if there has been DA which prevents you from remaining in your former home, the council should help if you are homeless. The restraining order should be evidence enough.
The fact that you are unable to sell because of your ex's intransigence and unable to live there because of DA will mean that the capital tied up in the house is disregarded and you will be entitled to help with rental costs if you qualify on income grounds.
With regard to the legal side of things, I couldn't afford a solicitor to represent me in my divorce. I saw one twice for advice and did all my own paperwork, and represented myself. It's also worth pointing out that legal aid is still available for some proceedings where there has been DV, but I don't know if this extends to occupation orders.
The National Domsetic Abuse helpline give very good advice re this sort of stuff.