The telemetry would have been showing Red Bull that the caliper was not releasing and the rotor temperature rising precipitously so they knew what to do as soon as Max arrived in the pit: remove the tire and wheel and extinguish the fire and cool the rotor with CO2.
There would have been no risk of a fuel fire since the fuel tank is well forward of the rear axle and protected by a lot of intervening body and structural CFRP as well as being lined with Kevlar and flame-retardant materials.
There would have been no risk of a fuel fire since the fuel tank is well forward of the rear axle and protected by a lot of intervening body and structural CFRP as well as being lined with Kevlar and flame-retardant materials.