Yeah you can unplug the harness from the TPS, and shoot a little WD in the plug and socket. Won't hurt at all.
I'd be more inclined to think it was an electrical gremlin from the jeep getting soaked and probably not a TPS problem. Do as banipal said and disconnect the power to the ECM.
To save the memory in your stereo, just pull the plugs off the ECM itself, sits right behind the battery. Will clear the memory, and you won't have to reset your radio stations.
97 Sahara, 74 Renegade, 72 CJ5, 55 Willy's (the Beast) Boss 302, 6:34 gearing, Bose 901 speakers.
God I miss that Jeep. Forgot the kinda Jeep, 80 SX4.