MIAMI — The man who fatally shot his wife at a Jewish community center pool in Northweast Miami-Dade on Sunday had stabbed the woman one day before, according to an arrest report released Monday. Carl Monty Watts Jr., 45, has now been jailed and is awaiting a charge of second-degree murder with a weapon and possession of a firearm by a convicted felon. The slain woman, Shandell Harris, had reported the Saturday stabbing to Miami police. Her injuries were not serious enough for her to be admitted to the hospital, law enforcement sources told The Miami Herald. It was not immediately clear why of…