I've read other stories where they've had a stubborn feeder go on strike for more than a month, and they moved it from the top level of a rack, to the bottom and then it ate no problem.

I just think that maybe people blow the whole "don't put your snake in a big cage" thing out of proportion. I think it is species-specific. Maybe balls don't do well in one of those situations, but i've had 3 hatchling corns in either a 40 gallon, or 41 quart tubs, and they did/are doing great. Just my opinion.