May Oklahoma State coach Mike Gundy's glorious mullet rest in peace ... maybe.According to a tweet from Cowboys DE Triston Grant, Gundy was in Klip It Up Salon in Stillwater Wednesday evening. Whether Gundy just went in for a trim or to get rid of the mullet entirely remains to be seen.Gundy's mullet first became a staple during July's Big 12 Media Days in Dallas, where he classified it as an "Arkansas Waterfall." Gundy said he began growing it because his son was badgering him about getting a haircut.On Nov.