Superglue fails at extreme tempretures so as Doobrey says, freezing it should loosen the glue. I used to superglue the tyres to the wheels of my radio controlled cars when I used to race them and the only way to remove them was to boil them up in a pan of water, thought I doubt doing the same would be good for your accelerator :-P
You probably would be best to just use brute force though, if it's stuck with superglue it shouldn't be bonded too fast to it.
