I heard that too (from the Vegan Disney blog). It's a shame that they removed the only vegetarian/vegan option from the menu and replaced it with a beef burger. Sounds like they were trying to appease the people who complained about the format change. I'm pretty sure the only thing that would make this burger a "Southwest" burger (besides the tortilla chips) is the toppings bar. I'm also pretty sure you can get a beef burger at several other QS locations in MK so I'm not sure what the outcry was all about.