Long's 24-yarder won it for the Blazers (5-4, 3-2 Conference USA) after FAU rallied from a 21-point deficit to score three fourth-quarter touchdowns and tie the game 28-28 with 4:03 left to play.
The Blazers dominated the first half, scoring on a pair of touchdown runs by Howard, another by D.J. Vinson, and a 78-yard pass from Clements to Jamarcus Nelson. The defense held the FAU to 46 yards total offense in the first half and UAB led 28-7 at the break.
Jaquez Johnson threw for 177 yards and three touchdowns for the Owls (3-6, 2-3).