OTOH, he can go as himself next hallowe'en...
To judge from the article, he panicked and tried to run away from the flames (setting others on fire in the process). If only someone had been able to get a rug or blanket or long cloth coat over him, so he could drop and roll. He might have suffered 2nd degree burns or less over a much smaller percentage of his body. As it is, I suspect the poor guy would be fortunate if he does NOT survive. :-(