A Walmart sign fell on the track at Atlanta Motor Speedway during the NASCAR playoff race on Sunday, and two insiders have a lot to say about it. OnThe Teardown podcast, Jeff Gluck and Jordan Bianchi of The Athletic expressed their anger for the Walmart sign having an impact on the end of the race. “What makes me irrationally angry today is this sign because to me if you’re going to have your entire season come down to these little three-race mini playoffs and the one-race championship, every single little thing from the track standpoint has got to be buttoned up,” Gluck said. “You cannot have…