Seriously- its a snow-flake, as in something snow bally like Halley's Comet - that would emit vapours under light pressure? What is this, if you disprove your own thesis in the prelude of your article? Scientific slapstick?
If you imagine a dirty snowball, then sling it past a star so that all the ice melts and leaves, you might be left with something vacuum welded together, but very fluffy for its size. Perhaps the same time that it lost all its volatiles is also what ejected it from some system, a slingshot around some other star.
