Southerwest even blogged about it with a response
"Kevin Smith is not a happy Southwest customer. The director was thrown off a flight from Oakland to Burbank, after being deemed too fat to fly. He later wound up on another Southwest flight, but has declared It's On and taken his rants to Twitter. 'Dear @SouthwestAir — I know I'm fat, but was Captain Leysath really justified in throwing me off a flight for which I was already seated?' he began. He also let the airline know he'd made it to his destination. 'Hey @SouthwestAir! I've landed in Burbank. Don't worry: wall of the plane was opened & I was airlifted out while Richard Simmons supervised.'"