FORMER VICE PRESIDENT AGNEW LEFT HIS KENWOOD HOME THURSDAY. SECRET SERVICE MEN ACCOMPANIED HIM, ALTHOUGH IN SIX MONTHS THEY WILL BE GONE. A LOCAL REALTOR HAS ALREADY TELEPHONED AGNEW TO ASK IF HIS HOUSE IS FOR SALE. AGNEW STOPPED BY THE FUNERAL FOR HIS HALF BROTHER WHO DIED THURSDAY. IN HIS WASHINGTON OFFICE CPLS NOTE BROTHER DIED ON TUESDAY.....IN HIS WASHINGTON OFFICE TELEGRAMS POURED IN BUT MEMBERS OF THE FORMER VICE PRESIDENT'S STAFF WEREN'S SAYING HOW MANY WERE SYMPATHETIC.