Thank you for your question
My name is Clare
I shall do my best to help you but I need some further information first
How much is the house worth?
Your husband and his brother can in fact apply to the court for an order for the sale of the house - and for an order forcing their brother to leave if necessary
This is done using the Trusts of Land and Appointment of Trustees Act - and the details are here
Please ask if you need further details
That is simply nonsense - if he can get it ias a "remortgage" he can get it as a mortgage