Patients.... sometimes going over finishes, especially one over another unlike finishes will have bad effects.
Put in a warm dry place for a couple of days, or-try making a "dryer" with some card board, and a medium wattage light bulb. Don't leave it unattended. You can try wiping the whole plane down with solvent. Use gloves, and have patients. Let dry between wipe downs, and eventually you will get all the goo off. Don't worry about the "finish" as you've stated you are about to give up on the plane as is.
After you have most, or all wiped off, use a very thinned epoxy, polyurethane, or fuel proof clear paint to re-seal.
As a last resort, peel off the covering, and re-cover. (may be the quickest way?)

Good luck,
Jetts