Los Angeles firefighter’s ear was successfully reattached after it was severed in an explosion that was set off during a brush fire near a homeless encampment on Monday, officials said. The Los Angeles Fire Department said in a statement Tuesday that more than 200 firefighters responded to a brush fire in the Sepulveda Basin, a nature preserve in Encino where there is also a homeless encampment, at around 1:30 p.m. Monday. The fire began as a half-acre grass fire, but responders found the three- to four-foot flames were also burning at the encampment. “Firefighters attacked the fire hard and f…