Dean Crouch, 32, was the store manager who stopped Jason White from leaving the Mahan Drive store with a .40-caliber pistol from the firearms counter on June 29.
"Academy has decided to, instead of treating him like the hero he is, they terminated his employment effective immediately because he put his hands on Mr. White," Crouch's attorney Ryan Hobbs said.
Just hours before he was taken into custody, White stole two handguns from Cash America Pawn on South Adams Street, according to Tallahassee Police.
White asked to look at the handgun at the firearms counter. He was handed the gun, then ran toward the front door.
Crouch, who court records say observed the transaction at the counter, and another employee tackled and subdued White at the exit doors and recovered the gun, a stolen backpack, five boxes of ammunition and two magazines for the Glock.