You will put the house on the market when it is sensible to do so, until then, if he needs to raise additional funds, tell him that there will be a lot of pub work over the summer, and he could start washing up.... 
When I had the landlady from hell, it was clear in my contract that I was not to change locks, in black and white. I asked literally everyone, CAB, shelter, letting agents and the Police. You have the right to quiet enjoyment of your home.
A cheating H, shagging all night and coming home from her bed is NOT going to do your quiet enjoyment of your home much good at all. If you want the person to leave, and it makes sense to do so, then the Police, if called would support it. I'm sure they would try and get you to re-consider chucking him out, but if you were adamant, they would suggest to him to give you some space.
When I changed the locks, the LL had a legal letter sent to me. Change the locks back or supply a set of keys, how I was in breach of my tenancy agreement and that I had no right. I replied that I have a right to live in my home without any form of harassment, and that if they wished to challenge this, they were welcome to seek a court order. They knew there was no way a court order would be granted against me, any more than a judge is going to order you to let him back in to live with you.
Allow him access to collect his stuff perhaps, but they can't force you to live with him, AFAIK.
Take advice, and try to heed it, but if it comes down to your peace and serenity, let him go to court to force you to open a door. He doesn't deserve an easy ride, not after what he has put you through.