Stanford did it as has several college teams over the years.
I'm amazed that in 2013 people still act like they don't get the name is intended to be a slur.
Jack Kent Cooke the prior owner spent years and thousands of dollars running an intentional disinformation campaign to protect the name. he went so far as to hire an actress, who it appears wasn't even Native American, and have her portray a Native American princess. everytime it would come up he'd trot her out and have her give a little speech where she talked about how the name made her feel proud of her heritage. After she passed away someone did some research and found out the tribe she claimed to belong to was not real, and that she wasn't using her real name and it was very unlikely she wasn even Native American. I think it's pretty obvious if an owner goes to those lengths, he knew something was wrong.
I've also never understood the money angle, will people be mad when they change it, sure, but eventually Washington fans will go out and buy new hats, new shirts, new jerseys, and they'll make a ton of money as the fans repopulate their closets with new logo clothes.
You nailed it Russ. The name will be changed. It's just a matter of time.