The ammo for an Abrams is stored in the rear of the turret, the bin, with a thick blast door between it and the crew. The rear of the turret has blowout panels designed to vent the blast to the outside and not inside the turret. That is probably what the big flare is. On T-72s it is onboard stored rounds in the hull that blows the turret off.
Also I do not think the NATO tanks in Ukraine are using the same secret squirrel armor th hat is installed on the country’s army t.anks