Yeah, torque converter won't mind a little oil on it.
Last weekend i removed the 5.0 from a mustang with an AOD that had a leaking rear main. Small amount of oil on the flexplate, small puddle at bottom of trans bellhousing...but nothing on the converter.
i just did my rear main. the car was leaking like a stuck pig smoking like crazy on hard throttle and they wouldnt let me run through tech if i didnt change it for the 4 hours of work its def not putting off