I recommend talking with someone about this ... but the alimony is a court order. Thus, I would think you would want to get a lawyer. The alimony would pay the attorneys fees in a short period of time. Additionally, you can fight for him to pay 1/2 of the attorney fees.
If the house is in probate you now have a probate attorney. You should speak with this probate attorney about the property being in foreclosure and the ramifications of this situation. If you are not the executor you might be required to be in the presence of this person as well as the probate attorney to get an answer. Most probate attorneys normally only speak to the court appointed or family appointed executor.
Even if this is true the monthly mortgage and any late fees are piling up and will have to be paid immediately after the probate has completed or the lender will complete the foreclosure procedure according to SC foreclosure laws. At that time the cost to bring the mortgage current might cost more as now attorney and foreclosure fees would have been added.
I hope this has been of some benefit to you, good luck.