I've no idea what age you are, but I suggest that in accepting the appointment you'll just be wasting a few more years of your life. Declining the position wont result in them putting you on the rack, and it may make a fade easier.
From stories I've heard, if you try the "I was a holy spirit appointed apostate," they'll reply with, "and the holy spirit used this invalid appointment to reveal your evil, Satanic, wicked heart condition." It's impossible to open the eyes of those that don't want to see.
That was my experience when I pointed out that the holy spirit had appointed unbelieving, manlusting me. Granted, I remained an elder for less than a year and it may have given me the kick I needed to get my ass out of there. You can't help anyone while working on the inside.