Awesome Deal. It couldn't happen to a more deserving and better fighter.
So what if he got a DUI. What the hell does that have to do with selling sneakers and clothes?
Just take a look at the list of other Athletes that Nike sponsors. Many of them have major transgressions.
They aren't getting signed by Nike because they are supposed to be Role Model, Saints and complete Boy Scouts. They are being signed because they kick ass in their sport and they either have or are expected to have an extremely high profile career. With a big Nike Swoosh on their Clothes.
Let the courts deal with the DUI. That's not Nike's job. However, a lot of sponsors have clauses once you sign with them. If he gets caught again (Notice I didn't say, if he does it again), so yeah, if he get's caught doing it, you can bet Nike will have an issue then.
Racism. I won't even dignify that with a response. Give me a break.