I have never known anyone get disfellowshipped for over eating. For that matter I never knew anyone get DF'd for being drunk either. I have seen lots of JWs drink too much including elders.
One elder got so drunk at a wedding he puked his false teeth down the toilet and flushed them away. He later (when sober) called a brother in the congregation who worked for the city to ask if there was anyway he could get his teeth back...I joke not. But I digress. I have, on the other hand, known several alcoholic JWs get DF'd. It seems totally unChristian to DF and shun people who need professional help with their substance dependancies. DFing them is merely sweeping the problem under the carpet. Is that what good shepherds as supposed to do? (Please excuse mixed metaphor)
Thirdson