UFC Fighter Thiago Silva walks in a BJJ school with a gun and threatens his separated wife and instructor Popovitch A prominent mixed martial artist was dumped Friday by a national fighting organization after police said he threatened to shoot his estranged wife and her boyfriend and was arrested. Thiago Anderson Ramos da Silva, a 31-year-old Brazilian who owns an Oakland Park home and trains in South Florida, competed as a light heavyweight for Ultimate Fighting Championship. Mixed martial artists draw from multiple disciplines, including boxing, wrestling, jiu-jitsu, judo and tae kwon do. The fight promoter terminated Silva's contract a day after the Broward Sheriff's Office said deputies waited about three hours for him to leave his home and a SWAT team was called.   Silva is off of Ultimate Fighting's card for a March match in Dallas, when a lawyer said he could hav...