you could actually treat the fuel by converting the glycol into something akin to biodiesel.
You'd have to blend in a matching amount of a long-chain fatty acid (oleic acid or similar), throw in some sodium, heat it and then acid wash it with water to strip out the remaining sodium. You'd then have to dry it with molecular sieves.
The kit to do it can be bought off-the-shelf for making your own biodiesel, but the need to use sodium metal (rather than sodium methoxide) would make the process dodgy unless you were used to handling the stuff. (Sodium is nOT nice) You still probably couldn't use it in an aircraft, but it would at least work as diesel fuel.