just take it off..carb cleaner does a fine job, it's like $5 from ford too...works great. Don't worry about the teflon coating, it's useless, if it did what it was intended to do, you're throttle would not be sticking. No big deal really...and I would take it off the car and clean it by hand because it's rather hard to do with it on, and I wouldn't want all that crap blowing through my engine.

1999 Silver Frost SVT #609 of 2760 Quaife, lightened SVT Flywheel, SPEC stage II clutch, removed resonator, k&n drop in - various other goodies too.