You know, if we are capable of actually making it reel with any of our actions, it will be smarter to capitalize on it and hurt it even more, not to attempt to run away with unpredictable chances of spontaneous evaporation. ("Leave" is not an auto-survive option, it's a resolution to run away and leave others in a harm's way). A suitably overwhelming alfa-strike can let us triumph (I.e. drive it away) here, methinks. Especially with Felix Felicis as our Path to Victory.
Also, Fusion is supposed to be a skill straight from the Age of Gods, the spirit is weakened - and let's not forget about masterwork potions in our hands. We are not completely out of our league.