I think he'd try and die in it. Sarah would say, "Brian, what are you doing?! put those fires out!" and he would turn slowly and say, "No, Sarah... You go... The Captain must go down with his ship..." And Brian would close his eyes and raise his arms to the sky just as the fires spread to the webcam and that's the last anyone would see of him.
Don't forget he'll masturbate right until the end. Jizz everywhere!!! <pokes Sarah>