Confidentiality is a tool of human resources departments and their legal advisors. Like any tool, it can be misused or wielded in a way it wasn't intended - and can do harm.
The longer the university and festival remain opaque, the more harm is done to the Oregon Bach Festival community.
It's not particularly helpful for the other arts organizations around town, either.

Silence is not always golden. The UO and OBF management are burning bridges with real human beings who deserve better, and leaving a welcome mat out for harmful speculation. 
Real course correction is called for, immediately.