I am in the Dayton area, but I did it myself. After I removed the pan I just took a pair of vice grips and pulled and twisted on the bolt. The steel pan dug into the aluminum bolt and allowed it to be removed. I think this could be done while the pan is in place, although I would be a little worried about small bolt shavings in the pan. Since they are aluminum, the pan magnets will not keep them from going through the system.
You could remove your pan, clean it out, then put it back. All you would need would be the tube of FIPG from the dealership. You may want to check with them on that. I used FIPG on mine because that is what it called for. Make sure you get the proper material for your car.
Be careful if you remove your pan. Even though you have drained it there will still be transmission fluid in there that will get everywhere if you are not prepared.
Tom