Over the years, I've heard it called Free Ascent, Emergency Ascent, Swimming Emergency Ascent, and it's never to be spoken of again cousin, Buoyant Ascent.
In an article I read several years ago the author wrote long ago it was referred to as “blow and go”; the diver spit out the reg, blew bubbles, and kicked to the surface while looking up the entire way. i want to say the article was in Dive Training written by Alex Brylske, or maybe it was his book, The Complete Diver.