This was starting to get some run on ESPiN and the such, so in the interest of bringing you all things OU related here is the "controversial" tweet.
If anyone is really worked up about this, I'd suggest they stop taking themselves so seriously. Obviously the focus this week needs to be 100% on Dallas, but I doubt anybody has to remind Travis of that. Lewis has a history with Nebraska (he originally committed there), so I'm sure he was just poking a little fun at their expense. It's not like people don't know he likes to talk.