GREENSBORO—The Cobras scored 33 unanswered points to grab a late 46-39 lead but gave up a late Columbus touchdown and 2-point conversion to fall 47-46 to the surging Lions. A Desmond Reece touchdown with 13:13 left in the third quarter was the last Columbus score until just 26.6 seconds remained, when Jarmon Fortson caught a 31-yard touchdown pass from Mason Espinosa to draw within 1. Darien Townsen then caught an acrobatic 2-point conversion to create the final margin. Saturday’s game was supposed to be a coming-out party of sorts for new quarterback Tommy Grady, an AFL legend and quarterback…