What do you know that we don't?
I can't speak for him, but I think he is relying on this little thing we call history. We don't even truly know if any racist act was committed. There are 2 allegations and neither of those are against the fella that quit. The only thing they are asking of him, outside of quiting his job, is to admit his white privilege.
In typical fashion, without any evidence, we are seeing blacks unite in a gang mentality and persecuting a potentially innocent man. It happened at duke, it happened with Mike brown, etc.
The next step is for famous black athletes such as lebron to tweet about it.
Hopefully we don't see any rioting/looting, but I wouldn't be shocked.
By now, we should all realize that the majority of blacks don't choose right/wrong, they simply choose black over white.