Foreclosure, Deed of Trust, Collateral estoppel, Foreclosure proceeding, Non-Judicial, Res Judicata, Notice, Doctrine of Collateral estoppel, Non-mutual collateral estoppel, Defensive collateral estoppel, Foreclosure sale, Assistant clerk, Foreclose, Damages, Default, Parties, Reverse Mortgage, Interlocutory, Borrower, Substitute Trustee, Immediate appeal, Summary Judgment