Feeling bad for him and recognizing that you're better off dumping it are two different things.
50 gallons, but each individual brewer probably only contributed 5. So the loss is 5 gallons of bad beer.
The other option, if you have the space and inclination, is to package it and wait. I don't know if a bad beer will get better, but waiting is free especially if you have a spare keg.
agreed i know its a lost cause..just know the feeling on a much smaller scale and it sucks.