Agreed, Sarge, this was a mess up of epic proportions on SW's part. Still, I'm kinda glad that they did mess up in this particular way, which is to say throwing off someone who is very willing and able to make a fuss, with a large audience to listen to. If it weren't Kevin Smith, it would just be 'another fat ass got thrown off the plane'. It's a little annoying that he ended up going for the "I'm fat but not that fat" line, because it implies that people who are "that fat" are perfectly fine to discriminate against, but it's a start.
Of course, since air travel has become the most common method of major travel in our train-less States, it really is discrimination -- but I'll not open that can of worms.