No. I read this right when it came out with much interest. Why would I ROFL? It's not physically impossible like a 2-4 MT stream explosion postulated to happen days after the nuclear excursion when decay-heat melted fuel was dipped in the suppression pool. The best statement I heard in that regard was: "If that was true, then Hawaii would be wiped off the map multiple times per day as lava falls into the ocean"

Related to this paper, nuclear chain reactor excursions are limited in energy by the vaporization and dispersal of fuel.